BEGIN:VCALENDAR VERSION:2.0 PRODID:-//SPIP/Plugin Agenda//NONSGML v1.0//FR X-WR-TIMEZONE:Europe/Paris CALSCALE:GREGORIAN X-WR-CALNAME;VALUE=TEXT: -- Laboratoire de Physique des Solides - UMR 8502 X-WR-RELCALID:https://www.lps.u-psud.fr/spip.php?article0 BEGIN:VEVENT SUMMARY:- Pascal Raux UID:20170710T213038-a3003-e191@https://www.lps.u-psud.fr DTSTAMP:20170710T213038 DTSTART:20171117T110000 DTEND:20171117T120000 CREATED:20170710T213038 LAST-MODIFIED:20170710T213108 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Liquid-grains interactions - Pascal Raux URL:https://www.lps.u-psud.fr/spip.php?article3003&id_evenement=191 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Alesya Mikhailovskaya UID:20171026T104010-a3029-e203@https://www.lps.u-psud.fr DTSTAMP:20171026T104010 DTSTART:20171124T110000 DTEND:20171124T120000 CREATED:20171026T104010 LAST-MODIFIED:20171026T104016 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Experimental evidence of non-affine deformations in disordered materials - Alesya Mikhailovskaya URL:https://www.lps.u-psud.fr/spip.php?article3029&id_evenement=203 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Edition scientifique : un panorama des évolutions en cours - Karim Ramdani UID:20171031T151236-a3047-e205@https://www.lps.u-psud.fr DTSTAMP:20171031T151236 DTSTART:20171128T133000 DTEND:20171128T150000 CREATED:20171031T151236 LAST-MODIFIED:20171031T151236 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Edition scientifique : un panorama des évolutions en cours - Karim Ramdani URL:https://www.lps.u-psud.fr/spip.php?article3047&id_evenement=205 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:The Chiral Anomaly and Ballistic Transport of Weyl Fermions UID:20171115T103809-a3058-e209@https://www.lps.u-psud.fr DTSTAMP:20171115T103809 DTSTART:20171130T110000 DTEND:20171130T123000 CREATED:20171115T103809 LAST-MODIFIED:20171115T104503 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:David Carpentier DESCRIPTION:The chiral anomaly is a unique property of massless relativistic particles in three dimensions. While the chiral nature of particles was expected to be a conserved property\, the breaking of this symmetry was a bizarre property of the associated field theory. The recent focus on materials in which low energy electrons behave as massless relativistic Weyl particles has opened the possibility to experimentally access consequences on transport of this field theory property. Indeed\, an anomalous contribution to the conductance in the presence of a magnetic field was associated to the presence of the chiral anomaly. In this talk\, I will focus on the different regime of ballistic transport of Weyl fermions in small mesoscopic conductors. I will show how the anomalous transport can be traced back to the presence of anomalous Landau Levels in such a junction\, and to the chiral anomaly. I will finally comment on the relation between diffusive and ballistic regimes. CATEGORIES:The Chiral Anomaly and Ballistic Transport of Weyl Fermions URL:https://www.lps.u-psud.fr/spip.php?article3058&id_evenement=209 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Michiel Postema UID:20170712T172809-a3004-e192@https://www.lps.u-psud.fr DTSTAMP:20170712T172809 DTSTART:20171201T110000 DTEND:20171201T120000 CREATED:20170712T172809 LAST-MODIFIED:20170713T133834 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Bubbles and antibubbles for ultrasound-guided drug delivery - Michiel Postema URL:https://www.lps.u-psud.fr/spip.php?article3004&id_evenement=192 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Sylvie Cohen-Addad UID:20170611T221308-a2989-e183@https://www.lps.u-psud.fr DTSTAMP:20170611T221308 DTSTART:20171215T110000 DTEND:20171215T120000 CREATED:20170611T221308 LAST-MODIFIED:20170906T092031 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:- Sylvie Cohen-Addad URL:https://www.lps.u-psud.fr/spip.php?article2989&id_evenement=183 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Nanodevices for Bio-inspired Computing - Julie Grollier UID:20171011T100036-a3024-e202@https://www.lps.u-psud.fr DTSTAMP:20171011T100036 DTSTART:20171219T110000 DTEND:20171219T120000 CREATED:20171011T100036 LAST-MODIFIED:20171018T152859 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Nanodevices for Bio-inspired Computing - Julie Grollier URL:https://www.lps.u-psud.fr/spip.php?article3024&id_evenement=202 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Isabelle Cantat UID:20170416T184121-a2957-e164@https://www.lps.u-psud.fr DTSTAMP:20170416T184121 DTSTART:20180119T110000 DTEND:20180119T120000 CREATED:20170416T184121 LAST-MODIFIED:20170905T085936 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:- Isabelle Cantat URL:https://www.lps.u-psud.fr/spip.php?article2957&id_evenement=164 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Pierre Colinet UID:20170503T133306-a2965-e169@https://www.lps.u-psud.fr DTSTAMP:20170503T133306 DTSTART:20180126T110000 DTEND:20180126T120000 CREATED:20170503T133306 LAST-MODIFIED:20171013T140443 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:- Pierre Colinet URL:https://www.lps.u-psud.fr/spip.php?article2965&id_evenement=169 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Cécile Monteux UID:20170925T085409-a3015-e196@https://www.lps.u-psud.fr DTSTAMP:20170925T085409 DTSTART:20180323T110000 DTEND:20180323T120000 CREATED:20170925T085409 LAST-MODIFIED:20170925T085416 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:- Cécile Monteux URL:https://www.lps.u-psud.fr/spip.php?article3015&id_evenement=196 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Biominéralisation & Calcifications Pathologiques : la belle et la bête UID:20171026T170955-a3030-e204@https://www.lps.u-psud.fr DTSTAMP:20171026T170955 DTSTART:20171116T133000 DTEND:20171116T150000 CREATED:20171026T170955 LAST-MODIFIED:20171026T173126 ORGANIZER;CN=Marie-France Mariotto[:mailto:mariotto@lps.u-psud.fr] ATTENDEE:D. Bazin et M. Daudon CATEGORIES:Biominéralisation & Calcifications Pathologiques : la belle et la bête URL:https://www.lps.u-psud.fr/spip.php?article3030&id_evenement=204 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:A Chiral Maxwell Demon UID:20171112T231944-a3057-e208@https://www.lps.u-psud.fr DTSTAMP:20171112T231944 DTSTART:20171116T110000 DTEND:20171116T120000 CREATED:20171112T231944 LAST-MODIFIED:20171112T232118 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Rosa Lopez DESCRIPTION:Maxwells demon is characterized by a hypothetical intelligence capable of sorting hot (fast) and cold (slow) atoms to left and right sub-cavities in a box by simply matchingly inserting and removing an impenetrable wall. This concept was suggested by J.C. Maxwell to highlight that thermodynamics is a macroscopic theory. Under ideal conditions\, inserting and removing the wall would not require work and the apparent contradiction with the second law the entropy in the box would be reduced and after the sorting process\, work could be extracted from the temperature difference between the sub-cavities has been a source of much debate ever since1. It is now generally believed that this paradox is overcome by the Landauer principle : Deleting the data required for the processing in the demons mind would at least generate entropy S = kBln2 or dissipate heat of at least Q = kBTln2 per bit of information\, yielding a net production of entropy. The demon measures on the system and conditioned on the measurement result it decides its action which is formally nothing but a closed-loop feed-back control scheme. Here\, we replace the two sub-cavities of the box by the magnetic field polarity that determines the chirality of the conducting channels. The chiral conductors are coupled to a quasilocalized level state. Depeneding on its occupation dynamics a nearby quantum point contact (QPC) choose one or other field polarity. In this manner the tunneling rates to the conductors are modified depending on the quasibound state occupation.In this work we will address the entropy production\, power production\, and efficiency when a magnetic feedback is considered. CATEGORIES:A Chiral Maxwell Demon URL:https://www.lps.u-psud.fr/spip.php?article3057&id_evenement=208 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Magnetic resonance at the quantum limit and beyond - Patrice Bertet UID:20171107T105933-a3053-e207@https://www.lps.u-psud.fr DTSTAMP:20171107T105933 DTSTART:20171115T103000 DTEND:20171115T120000 CREATED:20171107T105933 LAST-MODIFIED:20171107T105933 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Magnetic resonance at the quantum limit and beyond - Patrice Bertet URL:https://www.lps.u-psud.fr/spip.php?article3053&id_evenement=207 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Dark states and and transport spectroscopy in high purity carbon nanotubes - Christophe Strunk UID:20171031T153200-a3048-e206@https://www.lps.u-psud.fr DTSTAMP:20171031T153200 DTSTART:20171110T100000 DTEND:20171110T110000 CREATED:20171031T153200 LAST-MODIFIED:20171031T153200 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Dark states and and transport spectroscopy in high purity carbon nanotubes - Christophe Strunk URL:https://www.lps.u-psud.fr/spip.php?article3048&id_evenement=206 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Proximity-induced superconductivity in single and double Majorana nanowires UID:20171004T214322-a3023-e201@https://www.lps.u-psud.fr DTSTAMP:20171004T214322 DTSTART:20171019T110000 DTEND:20171019T120000 CREATED:20171004T214322 LAST-MODIFIED:20171004T214333 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Christopher Reeg DESCRIPTION:In this talk\, we will discuss various aspects of the superconducting proximity effect as it pertains to realizing topological superconductivity in both one- and two-nanowire systems. As experimental setups have moved almost exclusively toward inducing superconductivity in nanowires using a thin ( 10 nm thickness) layer of Al which forms a very strong contact\, we will first discuss the influence of the finite thickness of the superconductor on the proximity effect. We will show that due to the large level spacing in Al\, a large tunneling energy is required in order to reach the strong-coupling limit observed experimentally. However\, we also show that such strong coupling induces a large shift in the effective chemical potential of the nanowire which pushes the topological threshold to magnetic field strengths greatly exceeding the critical field of Al. Next\, we will show that intrawire and interwire pairing interfere destructively with one another in a double-nanowire system\, and that this destructive interference can be utilized to significantly reduce the magnetic field threshold required to reach the topological phase. We will also discuss how to engineer (effective) Kramers pairs of Majorana fermions in double nanowires when time-reversal symmetry is explicitly broken. CATEGORIES:Proximity-induced superconductivity in single and double Majorana nanowires URL:https://www.lps.u-psud.fr/spip.php?article3023&id_evenement=201 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Fête de la science 2017 UID:20171003T164622-a3020-e199@https://www.lps.u-psud.fr DTSTAMP:20171003T164622 DTSTART;VALUE=DATE:20171015 DTEND;VALUE=DATE:20171016 CREATED:20171003T164622 LAST-MODIFIED:20171003T164622 LOCATION:LPS \, Bt 510 Orsay ORGANIZER;CN=Marie-France Mariotto[:mailto:mariotto@lps.u-psud.fr] CATEGORIES:Fête de la science 2017 URL:https://www.lps.u-psud.fr/spip.php?article3020&id_evenement=199 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Fête de la science 2017 UID:20171003T164407-a3020-e198@https://www.lps.u-psud.fr DTSTAMP:20171003T164407 DTSTART;VALUE=DATE:20171013 DTEND;VALUE=DATE:20171014 CREATED:20171003T164407 LAST-MODIFIED:20171003T164407 ORGANIZER;CN=Marie-France Mariotto[:mailto:mariotto@lps.u-psud.fr] CATEGORIES:Fête de la science 2017 URL:https://www.lps.u-psud.fr/spip.php?article3020&id_evenement=198 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: Interactions and disorder in topological superconducting wires UID:20171004T212211-a3021-e200@https://www.lps.u-psud.fr DTSTAMP:20171004T212211 DTSTART:20171012T110000 DTEND:20171012T120000 CREATED:20171004T212211 LAST-MODIFIED:20171004T212226 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Dganit Meidan DESCRIPTION:The prospects of building quantum devices based on topologically ordered states of matter has caused a great deal of excitement. In these systems\, emergent excitations known as Majorana zero modes that occur at sample edges obey non- Abelian exchange statistics\, and their manipulation is inherently protected from common sources of decoherence. While their existence is known to be reasonably stable to imperfect conditions such as impurities and weak electron- electron interactions\, aspirations to observe and manipulate Majorana zero-modes in proximity coupled systems requires a detailed study of both these effects. As a particular example we numerically study the effect of disorder on the stability of the many body zero mode in a Kitaev chain with local interactions. Our numerical procedure allows us to resolve the position-space and multi-particle structure of the zero modes\, as well as providing estimates for the mean energy splitting between pairs of states of opposite fermion parity\, over the full many body spectrum. We find that the parameter space of a clean system can be divided into regions where interaction induced decay transitions are suppressed (Region I) and where they are not (Region II). In Region I we observe that disorder has an adverse effect on the zero mode\, which extends further into the bulk and is accompanied by an increased energy splitting between pairs of states of opposite parity. Conversely Region II sees a more intricate effect of disorder showing an enhancement of localization at the system's end\, accompanied by a reduction in the mean pairwise energy splitting CATEGORIES: Interactions and disorder in topological superconducting wires URL:https://www.lps.u-psud.fr/spip.php?article3021&id_evenement=200 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Directed Self-Assembly of Plasmonic Colloids - Luis M. Liz-Marzán UID:20170926T144800-a3016-e197@https://www.lps.u-psud.fr DTSTAMP:20170926T144800 DTSTART:20171009T150000 DTEND:20171009T160000 CREATED:20170926T144800 LAST-MODIFIED:20170926T144800 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Directed Self-Assembly of Plasmonic Colloids - Luis M. Liz-Marzán URL:https://www.lps.u-psud.fr/spip.php?article3016&id_evenement=197 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: Mechanical and Electrical sensing single cells using microfluidic devices - Bruno Le Pioufle UID:20170509T181139-a2967-e170@https://www.lps.u-psud.fr DTSTAMP:20170509T181139 DTSTART:20171006T110000 DTEND:20171006T120000 CREATED:20170509T181139 LAST-MODIFIED:20170920T093905 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES: Mechanical and Electrical sensing single cells using microfluidic devices - Bruno Le Pioufle URL:https://www.lps.u-psud.fr/spip.php?article2967&id_evenement=170 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Julien Derr UID:20170414T132956-a2956-e163@https://www.lps.u-psud.fr DTSTAMP:20170414T132956 DTSTART:20170929T110000 DTEND:20170929T120000 CREATED:20170414T132956 LAST-MODIFIED:20170414T133003 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Morphogenesis and Motions in Biological Systems - Julien Derr URL:https://www.lps.u-psud.fr/spip.php?article2956&id_evenement=163 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Contributing to the development of an academic department in Ethiopia - Raphaël Michel UID:20170428T135853-a2964-e168@https://www.lps.u-psud.fr DTSTAMP:20170428T135853 DTSTART:20170922T110000 DTEND:20170922T120000 CREATED:20170428T135853 LAST-MODIFIED:20170601T220053 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Adhesion of Nanoparticle-Coated Hydrogels to Living Tissues - Raphaël Michel URL:https://www.lps.u-psud.fr/spip.php?article2964&id_evenement=168 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Transport signatures of charge density wave order and the pseudogap critical point in cuprate superconductors - Sven Badoux UID:20170913T161804-a3013-e195@https://www.lps.u-psud.fr DTSTAMP:20170913T161804 DTSTART:20170920T103000 DTEND:20170920T113000 CREATED:20170913T161804 LAST-MODIFIED:20170913T161804 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Transport signatures of charge density wave order and the pseudogap critical point in cuprate superconductors - Sven Badoux URL:https://www.lps.u-psud.fr/spip.php?article3013&id_evenement=195 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Time-resolved X-ray diffraction studies of metallic coated InSb : application for X-ray switch and demonstration of high-pressure crystalline phase transition - Amélie Jarnac UID:20170905T131912-a3012-e194@https://www.lps.u-psud.fr DTSTAMP:20170905T131912 DTSTART:20170919T103000 DTEND:20170919T113000 CREATED:20170905T131912 LAST-MODIFIED:20170905T131912 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Time-resolved X-ray diffraction studies of metallic coated InSb : application for X-ray switch and demonstration of high-pressure crystalline phase transition - Amélie Jarnac URL:https://www.lps.u-psud.fr/spip.php?article3012&id_evenement=194 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:J. Techno 2017 UID:20170529T104226-a2917-e179@https://www.lps.u-psud.fr DTSTAMP:20170529T104226 DTSTART:20170915T093000 DTEND:20170915T130000 CREATED:20170529T104226 LAST-MODIFIED:20170529T104226 ORGANIZER;CN=Marie-France Mariotto[:mailto:mariotto@lps.u-psud.fr] ATTENDEE:J.Techno 2017 CATEGORIES:J. Techno 2017 URL:https://www.lps.u-psud.fr/spip.php?article2917&id_evenement=179 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:J. Techno 2017 UID:20170529T104000-a2917-e178@https://www.lps.u-psud.fr DTSTAMP:20170529T104000 DTSTART:20170914T140000 DTEND:20170914T170000 CREATED:20170529T104000 LAST-MODIFIED:20170529T104000 ORGANIZER;CN=Marie-France Mariotto[:mailto:mariotto@lps.u-psud.fr] ATTENDEE:J.Techno 2017 CATEGORIES:J. Techno 2017 URL:https://www.lps.u-psud.fr/spip.php?article2917&id_evenement=178 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Phase transitions in spin-crossover thin films probed by graphene transport measurements : towards smart heterostructures - Julien Dugay UID:20170905T131639-a3011-e193@https://www.lps.u-psud.fr DTSTAMP:20170905T131639 DTSTART:20170913T103000 DTEND:20170913T113000 CREATED:20170905T131639 LAST-MODIFIED:20170905T131639 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Phase transitions in spin-crossover thin films probed by graphene transport measurements : towards smart heterostructures - Julien Dugay URL:https://www.lps.u-psud.fr/spip.php?article3011&id_evenement=193 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:NMR Studies of Local Structure and Ion Transport in Lithium Battery Electrolytes - Steve Greenbaum UID:20170629T090833-a2996-e190@https://www.lps.u-psud.fr DTSTAMP:20170629T090833 DTSTART:20170711T110000 DTEND:20170711T120000 CREATED:20170629T090833 LAST-MODIFIED:20170629T090839 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:NMR Studies of Local Structure and Ion Transport in Lithium Battery Electrolytes - Steve Greenbaum URL:https://www.lps.u-psud.fr/spip.php?article2996&id_evenement=190 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Liquid crystalline colloids of inorganic nanosheets - Nobuyoshi Miyamoto UID:20170426T143324-a2963-e167@https://www.lps.u-psud.fr DTSTAMP:20170426T143324 DTSTART:20170707T110000 DTEND:20170707T120000 CREATED:20170426T143324 LAST-MODIFIED:20170606T183536 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Liquid crystalline colloids of inorganic nanosheets - Nobuyoshi Miyamoto URL:https://www.lps.u-psud.fr/spip.php?article2963&id_evenement=167 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Ivan Smalyukh UID:20170426T143158-a2962-e166@https://www.lps.u-psud.fr DTSTAMP:20170426T143158 DTSTART:20170630T110000 DTEND:20170630T120000 CREATED:20170426T143158 LAST-MODIFIED:20170426T143204 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Bacteria make liquid crystal colloids and gels - Ivan Smalyukh URL:https://www.lps.u-psud.fr/spip.php?article2962&id_evenement=166 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Design of Majorana Edge States in Topological Superconductors UID:20170619T002947-a2993-e187@https://www.lps.u-psud.fr DTSTAMP:20170619T002947 DTSTART:20170629T110000 DTEND:20170629T120000 CREATED:20170619T002947 LAST-MODIFIED:20170619T003032 LOCATION:Amphi Moyen\, RdC LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Dirk Morr DESCRIPTION:The experimental observation of Majorana bound states in topological superconductors represents a major breakthrough in realizing their applications in quantum computation. Recent proposals focusing on the creation of Majorana states on the edges of 2D magnetic (Shiba) islands have raised the question of whether Majorana states can be designed at the interface between complex magnetic structures and s-wave superconductors. In this talk\, I will demonstrate that it is possible to design Majorana modes by engineering the spatial and magnetic structure of Shiba islands located on the surface of s-wave superconductors. I show that by investigating the relation between local transport properties – as reflected in the spatial flow of charge – and global transport properties\, one can identify characteristic transport properties of Majorana modes\, such as a quantized conductance that is proportional to the Chern number. In addition\, I demonstrate that topological low-energy edge modes carry a supercurrent whose chirality reflects the sign of the Chern number. Finally\, I show that topological superconductors exhibit an uncon-ventional spatial structure of superconducting triplet correlations which can be both time reversal (TR) breaking and TR preserving within the same system. CATEGORIES:Design of Majorana Edge States in Topological Superconductors URL:https://www.lps.u-psud.fr/spip.php?article2993&id_evenement=187 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Photoinduced dynamics of electronic\, structural and magnetic order in transition metal oxides - Elsa Abreu UID:20170626T094528-a2995-e189@https://www.lps.u-psud.fr DTSTAMP:20170626T094528 DTSTART:20170628T140000 DTEND:20170628T150000 CREATED:20170626T094528 LAST-MODIFIED:20170626T094528 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Photoinduced dynamics of electronic\, structural and magnetic order in transition metal oxides - Elsa Abreu URL:https://www.lps.u-psud.fr/spip.php?article2995&id_evenement=189 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Effects of disorder on nonclassicality in many-body systems UID:20170619T001427-a2992-e186@https://www.lps.u-psud.fr DTSTAMP:20170619T001427 DTSTART:20170628T103000 DTEND:20170628T120000 CREATED:20170619T001427 LAST-MODIFIED:20170626T210226 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Debasis Sadhukhan DESCRIPTION:Quantum correlations have been shown to be useful resources for a variety of quantum information and computational tasks. Many-body systems constitute a natural ground for the physical realization of such quantum information protocols. However\, pure quantum systems are very rare in nature due to decoherence\, thermal fluctuations\, impurities\, etc. Thus\, disordered systems form one of the center stages of studies in many-body physics and often lead to counterintuitive yet appealing physical phenomena such as many-body localization\, disorder-induced order\, etc. From a quantum information theoretic perspective\, I will discuss several interesting phenomena in the realm of quenched disorder which include enhancement of quantum correlation length\, overcoming no-go theorems\, and enhanced disorder-induced order of entanglement under thermal fluctuations. In a similar spirit\, inhomogeneity also leads to generation of new phases in the system. Introduction of an alternating chemical potential in an 1D Fermi gas on a lattice develops a new phase compared to the same system with uniform chemical potential which can be characterized by quantum correlations present in the system. I will also talk about the trends of quantum correlations in such system\, under closed and open dynamics. Finally\, I will show that bipartite entanglement can be frozen over time with a proper choice of the many-body substrate\, which is in contact with the environment via a repetitive interaction. CATEGORIES:Effects of disorder on nonclassicality in many-body systems URL:https://www.lps.u-psud.fr/spip.php?article2992&id_evenement=186 SEQUENCE:2 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Glass transition at interfaces - Thomas Salez UID:20170422T174313-a2961-e165@https://www.lps.u-psud.fr DTSTAMP:20170422T174313 DTSTART:20170623T110000 DTEND:20170623T120000 CREATED:20170422T174313 LAST-MODIFIED:20170422T174321 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Glass transition at interfaces - Thomas Salez URL:https://www.lps.u-psud.fr/spip.php?article2961&id_evenement=165 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:SmB6 : Skyrme insulator on the brink of superconductivity UID:20170618T234540-a2991-e185@https://www.lps.u-psud.fr DTSTAMP:20170618T234540 DTSTART:20170623T110000 DTEND:20170623T120000 CREATED:20170618T234540 LAST-MODIFIED:20170618T234613 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Piers Coleman DESCRIPTION:SmB6\, an ultra-narrow gap insulator discovered more than 50 years ago\, poses a paradox. On the one hand\, current theory and some experiments indicate that SmB6 is likely a topological insulator. On the other hand\, this system has been long known to display a large linear specific heat[1] and recent dHvA measurements[2] suggest that it contains a Fermi surface which responds to the Lorentz force\, but is insulating. Optical measurements also reveal that this insulator is an AC conductor\, with a large ingap ac conductivity and also exhibits a thermal conductivity that is proportional to the applied field[3]\, a feature reminiscent of an unpinned vortex lattice. These paradoxical results\, if true\, suggest an very unusual kind of insulator. I'll argue that the apparent presence of a Fermi surface of nominally neutral quasiparticles which nevertheless respond to a Lorentz force requires broken Gauge invariance\, which normally would imply superconductivity. This leads us to propose the concept of a "Skyrme insulator" : a condensate with a Meissner stiffness which is nevertheless topologically unable to support the quantization of circulation. The Skyrme insulator theory allows us to understand the linear specific heat of SmB6 in terms of a neutral Majorana Fermi sea\, and the theory predicts that in a screened environment at below fields of order a Gauss\, SmB6 will develop a Meissner effect. REFERENCES : [1] K. Flachbart\, M. Reiffers\, and S. Janos\, Journal of Less Common Metals 88\, L11 (1982). [2] B. S. Tan\, et al\, Science 349\, 287 (2015). [3] N. J. Laurita\, et al\, Phys. Rev. B 94\, 165154 (2016). [4] S. Sebastian\, APS March meeting \, 1603.09681 (2016). [5 ]Onur Erten\, Po-Yao Chang\, Piers Coleman and Alexei Tsvelik\, arXiv 1701.XXXX to be published (2017). CATEGORIES:SmB6 : Skyrme insulator on the brink of superconductivity URL:https://www.lps.u-psud.fr/spip.php?article2991&id_evenement=185 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: The anomalous de Haas-van Alphen effect and Excitons in a topological Kondo insulator UID:20170619T113414-a2994-e188@https://www.lps.u-psud.fr DTSTAMP:20170619T113414 DTSTART:20170622T110000 DTEND:20170622T123000 CREATED:20170619T113414 LAST-MODIFIED:20170620T002727 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Johannes Knolle DESCRIPTION:The de Haas-van Alphen effect\, describing oscillations of the magnetization as a function of magnetic field\, is commonly assumed to be a definite sign for the presence of a Fermi surface (FS) in a metal. Here we show that\, in contrast to this canonical situation\, there can be quantum oscillations even for insulators of certain types. We draw connections to recent experiments on the topological Kondo insulator (TKI) candidate SmB6. In addition\, we show that TKIs are susceptible to the formation of bound electron-hole pairs. These excitons can account for long-standing thermodynamic and recent transport anomalies in SmB6 which is crucial for the identification of bulk topological signatures. CATEGORIES:The anomalous de Haas-van Alphen effect and Excitons in a topological Kondo insulator URL:https://www.lps.u-psud.fr/spip.php?article2994&id_evenement=188 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Alban Sauret UID:20161004T080547-a2845-e126@https://www.lps.u-psud.fr DTSTAMP:20161004T080547 DTSTART:20170616T110000 DTEND:20170616T120000 CREATED:20161004T080547 LAST-MODIFIED:20170414T091942 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Interfacial effects in fluid-particles systems - Alban Sauret URL:https://www.lps.u-psud.fr/spip.php?article2845&id_evenement=126 SEQUENCE:2 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Helical gaps in interacting Rashba wires UID:20170611T231619-a2990-e184@https://www.lps.u-psud.fr DTSTAMP:20170611T231619 DTSTART:20170615T110000 DTEND:20170615T120000 CREATED:20170611T231619 LAST-MODIFIED:20170611T231633 LOCATION:salle 208a\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Thomas SCHMIDT DESCRIPTION:A partially gapped spectrum due to the application of a magnetic field is one of the main probes of Rashba spin-orbit coupling in nanowires. Such a "helical gap" manifests itself in the linear conductance\, as well as in dynamic response functions such as the spectral function\, the structure factor\, or the tunneling density of states. We will present results about the signature of the helical gap in these observables with a particular focus on the interplay between Rashba spin-orbit coupling and electron-electron interactions. In a quasi-one-dimensional wire\, interactions can open a helical gap even without magnetic field. To show how the two types of helical gaps\, caused by magnetic fields or interactions\, can be distinguished in experiments\, we will present the dynamic response functions calculated using bosonization\, a renormalization group analysis\, and the exact form factors of the emerging sine-Gordon model. For special interaction strengths\, the results can be verified by refermionization. The helical gap typically occurs at low electron densities where the Coulomb energy dominates over the kinetic energy. To address this strongly correlated limit\, we have also investigated Rashba wires using Wigner crystal theory. To interplay of Rashba spin-orbit coupling and a magnetic field then leads to an effective spiral magnetic field. We show that helical gap exists even in the limit of strong interactions but its dependence on electron density differs significantly from the weakly interacting case. CATEGORIES:Helical gaps in interacting Rashba wires URL:https://www.lps.u-psud.fr/spip.php?article2990&id_evenement=184 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:From molecules to graphene\, new opportunities for spintronics beyond conventional materials - Pierre Seneor UID:20170606T103017-a2988-e182@https://www.lps.u-psud.fr DTSTAMP:20170606T103017 DTSTART:20170614T103000 DTEND:20170614T113000 CREATED:20170606T103017 LAST-MODIFIED:20170606T103017 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:From molecules to graphene\, new opportunities for spintronics beyond conventional materials - Pierre Seneor URL:https://www.lps.u-psud.fr/spip.php?article2988&id_evenement=182 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Particle and Droplets at Nanostructured Interfaces : Metastability and Thermally Activated Dynamics - Carlos Colosqui UID:20170605T073556-a2987-e181@https://www.lps.u-psud.fr DTSTAMP:20170605T073556 DTSTART:20170609T110000 DTEND:20170609T120000 CREATED:20170605T073556 LAST-MODIFIED:20170605T073602 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Particles and Droplets at Nanostructured Interfaces : Metastability and Thermally Activated Dynamics - Carlos Colosqui URL:https://www.lps.u-psud.fr/spip.php?article2987&id_evenement=181 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Electronic structure of 2D materials and van der Waals heterostructures probed at the nanoscale - Pierre Mallet UID:20170529T095722-a2983-e176@https://www.lps.u-psud.fr DTSTAMP:20170529T095722 DTSTART:20170607T103000 DTEND:20170607T113000 CREATED:20170529T095722 LAST-MODIFIED:20170529T095722 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Electronic structure of 2D materials and van der Waals heterostructures probed at the nanoscale - Pierre Mallet URL:https://www.lps.u-psud.fr/spip.php?article2983&id_evenement=176 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Evolution of spectral and transport quantities with doping in the SU(2) theory of cuprates UID:20170514T225720-a2973-e174@https://www.lps.u-psud.fr DTSTAMP:20170514T225720 DTSTART:20170601T110000 DTEND:20170601T123000 CREATED:20170514T225720 LAST-MODIFIED:20170523T234322 LOCATION:salle 315\, aîle sud LPS\, bât 510 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Corentin Morice DESCRIPTION:Recent transport experiments in the cuprate superconductors shed new light on the connection between the enigmatic pseudogap phase and the evolution of the electronic dispersion under doping. The latter is known to evolve from Fermi arcs measured by ARPES in the underdoped regime\, to a large hole Fermi surface at high doping\, as seen e.g. in quantum oscillation measurements. Combined Hall number and resistivity measurements at high magnetic field showed that the carrier density sharply changes from p to 1+p at the pseudogap critical doping p*\, linking the opening of the pseudogap to a change in electronic dispersion. The SU(2) theory of cuprates shows that antiferromagnetic short range interactions cause the arising of both charge and superconducting orders\, which are related by an SU(2) symmetry. The fluctuations associated with this symmetry form a pseudogap phase\, which was shown to account for Raman\, ARPES and strange metal experimental evidence. We derived the renormalized electronic propagator under the SU(2) dome\, and calculated the spectral functions and transport quantities of the renormalized bands. We show that their evolution with doping matches both spectral and transport measurements. CATEGORIES:Evolution of spectral and transport quantities with doping in the SU(2) theory of cuprates URL:https://www.lps.u-psud.fr/spip.php?article2973&id_evenement=174 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Generating spin currents in germanium using spin-orbit coupling - Matthieu Jamet UID:20170529T110351-a2984-e180@https://www.lps.u-psud.fr DTSTAMP:20170529T110351 DTSTART:20170531T140000 DTEND:20170531T150000 CREATED:20170529T110351 LAST-MODIFIED:20170529T110351 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Generating spin currents in germanium using spin-orbit coupling - Matthieu Jamet URL:https://www.lps.u-psud.fr/spip.php?article2984&id_evenement=180 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Artificial magnets as model systems : from the fragmentation of magnetization to the square ice model UID:20170529T095922-a2982-e177@https://www.lps.u-psud.fr DTSTAMP:20170529T095922 DTSTART:20170530T140000 DTEND:20170530T153000 CREATED:20170529T095922 LAST-MODIFIED:20170529T101109 LOCATION:Salle de réunion 208aAutomatic word wrap 2ème Sud ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Benjamin Canals DESCRIPTION:Complex architectures of nanostructures are routinely elaborated using bottom-up or nanofabrication processes. This technological capability allows scientists to engineer materials with properties that do not exist in nature\, but also to manufacture model systems to explore fundamental issues which appeared in condensed matter physics. One- and two-dimensional frustrated arrays of magnetic nanostructures are one class of systems for which theoretical predictions can now be tested and challenged experimentally. These systems have been the subject of intense research in the last few years and have allowed the investigation of a rich physics and fascinating phenomena\, such as the exploration of the extensively degenerate ground-state manifolds of spin ice systems\, the evidence of new magnetic phases in purely two-dimensional lattices\, and the observation of pseudo-excitations involving classical analogues of magnetic charges. This talk aims at providing two examples of two-dimensional artificial magnets which allow to probe the low energy manifolds of two exotic Ising systems. The first one is related to the seminal 6-vertex model and shows that it is possible to perform a scan through the 6-vertex model phase diagram with an appropriately designed artificial magnet [1]. In particular\, the symmetric point of the (Lieb) square ice is recovered\, providing with the opportunity to study the signatures of an algebraic Coulomb spin liquid. Because of the experimental procedure used to reach the low energy manifold\, quasi-particles are trapped in this disordered manifold\, pointing to the need of thermal systems\, but also emphasizing that these systems may be well suited to study out of equilibrium relaxation of monopole-(anti)monopole pairs in a near future. The second one refers to a recent proposal\, the fragmentation of magnetisation [2]\, in an Ising Kagomé model. Here\, we show it is possible to observe this intriguing phenomena\, which corresponds to the splitting of the local degree of freedom into two channels\, one ordering at low effective temperatures\, in an AF all-in all-out ordering despite the ferromagnetic nature of the system\, the other\, building a Coulomb-like low energy manifold\, inside which the magnetic equivalent of the Kirchhoff law at each node of the Kagomé lattice is fulfilled [3]. [1] Y. Perrin\, B. Canals\, N. Rougemaille\, Nature 540\, 410–413 (2016). [2] M. E. Brooks-Bartlett\, S. T. Banks\, L. D. C. Jaubert\, A. Harman-Clarke\, and P. C. W. Holdsworth\, Phys. Rev. X\, 4\, 011007 (2014). [3] B. Canals\, I. A. Chioar\, V.-D. Nguyen\, M. Hehn\, D. Lacour\, F. Montaigne\, A. Locatelli\, T. O. Mentes\, B. S. Burgos and N. Rougemaille\, Nat. Comm. 7\, 11446 (2016). CATEGORIES:Artificial magnets as model systems : from the fragmentation of magnetization to the square ice model URL:https://www.lps.u-psud.fr/spip.php?article2982&id_evenement=177 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Gap opening in graphene on nanostructured SiC and vicinal noble metal surfaces - Arlensiú CELIS UID:20170510T161513-a2968-e172@https://www.lps.u-psud.fr DTSTAMP:20170510T161513 DTSTART:20170524T103000 DTEND:20170524T113000 CREATED:20170510T161513 LAST-MODIFIED:20170510T161513 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Gap opening in graphene on nanostructured SiC and vicinal noble metal surfaces - Arlensiú CELIS URL:https://www.lps.u-psud.fr/spip.php?article2968&id_evenement=172 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Superconductivity in Weyl metals. UID:20170514T234856-a2974-e175@https://www.lps.u-psud.fr DTSTAMP:20170514T234856 DTSTART:20170523T110000 DTEND:20170523T123000 CREATED:20170514T234856 LAST-MODIFIED:20170514T235806 LOCATION:Salle de réunion 315 3ème Sud ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Alexander Zyuzin DESCRIPTION:We report on a study of intrinsic superconductivity in a doped Weyl semimetal. We find that\, in an inversion-symmetric Weyl metal\, the odd-parity BCS state has a lower energy than the FFLO state\, despite the nodes in the gap. The FFLO state\, on the other hand\, may have a lower energy in a noncentrosymmetric Weyl metal\, in which Weyl nodes of opposite chirality have different energy. However\, realizing the FFLO state is\, in general\, very difficult since the paired states are not related by any exact symmetry\, which precludes a weak-coupling superconducting instability. We also discuss some of the physical properties of the nodal BCS state\, in particular\, Majorana and Fermi arc surface states. CATEGORIES:Superconductivity in Weyl metals. URL:https://www.lps.u-psud.fr/spip.php?article2974&id_evenement=175 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Clémence Le Coeur UID:20170310T172803-a2924-e158@https://www.lps.u-psud.fr DTSTAMP:20170310T172803 DTSTART:20170519T110000 DTEND:20170519T120000 CREATED:20170310T172803 LAST-MODIFIED:20170310T173052 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Formation of Poly(methacrylic acid) (PMAA) physical gels\, effect of temperature and shear. - Clémence Le Coeur URL:https://www.lps.u-psud.fr/spip.php?article2924&id_evenement=158 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Non-equilibrium superconductivity in driven alkali-doped fullerides UID:20170514T222120-a2972-e173@https://www.lps.u-psud.fr DTSTAMP:20170514T222120 DTSTART:20170518T110000 DTEND:20170518T120000 CREATED:20170514T222120 LAST-MODIFIED:20170514T223247 LOCATION:Salle de réunion 208a\, 2eme étage aîle sud ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Giacomo Mazza DESCRIPTION:The optical stimulation of solids by means of strong light pulses has opened new routes for the investigation of collective phenomena in quantum materials. In this talk I will consider the remarkable case of the experimental observations of a superconducting-like response in light-stimulated organic compound K3C60 above the equilibrium critical temperature [1]. In particular\, I will discuss the non-equilibrium properties of a minimal multi-orbital model describing strongly correlated superconductivity in alkali-doped fullerides [2]. Following a recent theoretical proposal for superconductivity boosting in A3C60 systems [3]\, I will consider an orbital- and time- dependent modulation of the on-site interaction energies. I will show that this leads to the formation of a transient non-equilibrium superconducting state which survives much beyond the equilibrium critical temperature Tc and whose properties are strongly different from what expected by equilibrium considerations. I will show that this leads to a regime in which the driving induces a transient superconductive state beyond the equilibrium critical temperature while suppressing superconductivity for T\, rescaled by LΔ\, Δ being the average level spacing in the middle of the spectrum and L the systems size\, is an efficient probe of the many-body localization transition\, as it increases/vanishes exponentially in the delocalized/localized phase. CATEGORIES: Drude weight fluctuations in many-body localized systems URL:https://www.lps.u-psud.fr/spip.php?article2884&id_evenement=139 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Charles Baroud UID:20160921T115404-a2841-e122@https://www.lps.u-psud.fr DTSTAMP:20160921T115404 DTSTART:20161202T110000 DTEND:20161202T123000 CREATED:20160921T115404 LAST-MODIFIED:20160921T115519 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Two stories on Ostwald ripnening in microfluidic devices - Charles Baroud URL:https://www.lps.u-psud.fr/spip.php?article2841&id_evenement=122 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Spying on relativistic-like electrons with a carbon nanotube - Jean-Damien Pillet UID:20161123T164659-a2880-e137@https://www.lps.u-psud.fr DTSTAMP:20161123T164659 DTSTART:20161130T103000 DTEND:20161130T113000 CREATED:20161123T164659 LAST-MODIFIED:20161123T164659 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Spying on relativistic-like electrons with a carbon nanotube - Jean-Damien Pillet URL:https://www.lps.u-psud.fr/spip.php?article2880&id_evenement=137 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Evelyne Kolb UID:20160927T105147-a2844-e125@https://www.lps.u-psud.fr DTSTAMP:20160927T105147 DTSTART:20161125T110000 DTEND:20161125T120000 CREATED:20160927T105147 LAST-MODIFIED:20160927T105156 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Physical interaction between plant root growth and model granular soil - Evelyne Kolb URL:https://www.lps.u-psud.fr/spip.php?article2844&id_evenement=125 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Single crystal growth of boron nitride and its properties - Kenji Watanabe UID:20161110T103840-a2873-e134@https://www.lps.u-psud.fr DTSTAMP:20161110T103840 DTSTART:20161124T103000 DTEND:20161124T113000 CREATED:20161110T103840 LAST-MODIFIED:20161110T103847 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Single crystal growth of boron nitride and its properties - Kenji Watanabe URL:https://www.lps.u-psud.fr/spip.php?article2873&id_evenement=134 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: Quantum optics of many-body systems : Quantum optical lattices and weak measurements for ultracold bosons and fermions UID:20161117T100012-a2874-e136@https://www.lps.u-psud.fr DTSTAMP:20161117T100012 DTSTART:20161122T110000 DTEND:20161122T120000 CREATED:20161117T100012 LAST-MODIFIED:20161117T100049 LOCATION:Parc Club bât 18-20\, RDC ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Igor Mekhov DESCRIPTION:We show that introducing the quantumness of light into ultracold gas problems significantly enriches many-body physics. We prove that the quantum backaction of weak global measurement constitutes a novel source of competitions in many-body systems (in addition to standard short-range tunnelling and interactions in lattices) [1-3]. This leads to novel dynamical effects : multimode oscillations of macroscopic superposition states\, nonlocal non-Hermitian Zeno dynamics\, long-range correlated pair tunnelling\, protection and break-up of fermion pairs [1]\, as well as creation of antiferromagnetic states [2-3]. Here\, the quantum measurements play a very different role from the dissipation in open driven systems. We demonstrate the generation of multipartite mode entanglement in this system [4]. Moreover\, quantization of optical lattice potentials (via cavity QED effects) enables quantum simulations of various long-range interacting systems unobtainable using classical optical lattices [5]. It leads to new quantum phases (dimers\, trimers\, etc. of matter waves similar to valence bond solids) beyond density orders (e.g. supersolids and density waves) directly benefiting from the collective light-matter interaction. Our approaches can be generalized to the arrays of other quantum emitters\, e.g.\, superconducting qubits and excitons. [1] G. Mazzucchi\, W. Kozlowski\, S. Caballero-Benitez\, T. Elliott\, and I. B. Mekhov\, Phys. Rev. A 93\, 023632 (2016) ; [2] G. Mazzucchi\, S. F. Caballero-Benitez\, and I. B. Mekhov\, Scientific Rep. 6\, 31196 (2016) ; [3] G. Mazzucchi\, S. F. Caballero-Benitez\, D. A. Ivanov\, and I. B. Mekhov\, Optica (OSA)\, 3 1213 (2016) ; [4] T. J. Elliott\, W. Kozlowski\, S. Caballero-Benitez\, I. B. Mekhov\, Phys. Rev. Lett. 114\, 113604 (2015) ; [5] S. F. Caballero-Benitez and I. B. Mekhov\, Phys. Rev. Lett. 115\, 243604 (2015). CATEGORIES: Quantum optics of many-body systems : Quantum optical lattices and weak measurements for ultracold bosons and fermions URL:https://www.lps.u-psud.fr/spip.php?article2874&id_evenement=136 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:New insight into the phase diagram of the cuprates - Martin Greven UID:20161110T104259-a2865-e135@https://www.lps.u-psud.fr DTSTAMP:20161110T104259 DTSTART:20161121T103000 DTEND:20161121T113000 CREATED:20161110T104259 LAST-MODIFIED:20161110T104335 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:New insight into the phase diagram of the cuprates - Martin Greven URL:https://www.lps.u-psud.fr/spip.php?article2865&id_evenement=135 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Emilie Verneuil UID:20160905T170052-a2835-e116@https://www.lps.u-psud.fr DTSTAMP:20160905T170052 DTSTART:20161118T110000 DTEND:20161118T120000 CREATED:20160905T170052 LAST-MODIFIED:20160905T170109 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Avoiding lumps during polymer powder dissolution : wetting\, diffusion and shear aspects - Emilie Verneuil URL:https://www.lps.u-psud.fr/spip.php?article2835&id_evenement=116 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Exploring the possibilities of graphene functionalization using the physi-\, chimi-sorption of molecules and metal intercalation - Laurent Simon UID:20161021T102700-a2855-e129@https://www.lps.u-psud.fr DTSTAMP:20161021T102700 DTSTART:20161109T103000 DTEND:20161109T113000 CREATED:20161021T102700 LAST-MODIFIED:20161021T102700 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Exploring the possibilities of graphene functionalization using the physi-\, chimi-sorption of molecules and metal intercalation - Laurent Simon URL:https://www.lps.u-psud.fr/spip.php?article2855&id_evenement=129 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Frank Smallenburg UID:20160921T200524-a2843-e124@https://www.lps.u-psud.fr DTSTAMP:20160921T200524 DTSTART:20161104T110000 DTEND:20161104T120000 CREATED:20160921T200524 LAST-MODIFIED:20160921T200542 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Phase behavior in network-forming liquids : patchy particles\, vitrimers\, and water - Frank Smallenburg URL:https://www.lps.u-psud.fr/spip.php?article2843&id_evenement=124 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: Frustrated magnetism on the swedenborgite lattice UID:20161024T144224-a2857-e131@https://www.lps.u-psud.fr DTSTAMP:20161024T144224 DTSTART:20161103T110000 DTEND:20161103T120000 CREATED:20161024T144224 LAST-MODIFIED:20161102T170411 LOCATION:Parc Club bât 23-25\, Salle 215 1er étage ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:LARS FRITZ CATEGORIES: Frustrated magnetism on the swedenborgite lattice URL:https://www.lps.u-psud.fr/spip.php?article2857&id_evenement=131 SEQUENCE:2 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: Ultimate limits of quantum measurements UID:20161023T154228-a2856-e130@https://www.lps.u-psud.fr DTSTAMP:20161023T154228 DTSTART:20161028T110000 DTEND:20161028T120000 CREATED:20161023T154228 LAST-MODIFIED:20161023T154339 LOCATION:Parc Club RDC bat 18-20 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Daniel Braun DESCRIPTION:Quantum enhanced measurements aim at measuring physical quantities with increased precision by using quantum mechanical effects. At the heart of most theoretical efforts in the field lies quantum parameter estimation theory (q-pet)\, which provides a powerful and general framework for analysing the performance of measurements in the quantum realm. Most of the work has gone into the investigation of the benefits of entangled states\, which are\, however\, limited in the presence of decoherence. In this talk I will give a wider perspective of quantum enhanced measurements\, and explore in particular possibilities of quantum enhancement without the use of entanglement. The examples discussed range from the sensitivity of artificial noses\, over the measurement of chemical potentials\, to measurements of the speed of light. The latter example goes well beyond q-pet\, and I will show that the ultimate precision of speed-of-light measurements is set by both quantum and general relativistic effects\, offering a new perspective on possible quantum fluctuations of space-time geometry. CATEGORIES: Ultimate limits of quantum measurements URL:https://www.lps.u-psud.fr/spip.php?article2856&id_evenement=130 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Emergent gravity in graphene and in Dirac/Weyl semimetals UID:20161018T131259-a2849-e128@https://www.lps.u-psud.fr DTSTAMP:20161018T131259 DTSTART:20161020T110000 DTEND:20161020T123000 CREATED:20161018T131259 LAST-MODIFIED:20161018T131324 LOCATION:Parc Club RDC bat 18-20 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:MIKHAIL ZUBKOV DESCRIPTION:In graphene in the presence of strain the elasticity theory metric naturally appears. However\, this is not the one experienced by fermionic quasiparticles. Fermions propagate in curved space\, whose metric is defined by expansion of the effective Hamiltonian near the topologically protected Fermi point. We calculate the corresponding emergent gravitational fields. Next\, we extend our consideration to the case\, when the dislocations are present. We consider the situation\, when the deformation is described by elasticity theory and calculate both torsion and emergent magnetic field carried by the dislocation. The dislocation carries singular torsion in addition to the quantized flux of emergent magnetic field. Both may be observed in the scattering of quasiparticles on the dislocation. Emergent magnetic field flux manifests itself in the Aharonov - Bohm effect while the torsion singularity results in Stodolsky effect. Besides\, we extend our consideration to the tight-binding model with cubic symmetry that may be relevant for the description of a certain class of 3D Weyl semimetals. We take into account elastic deformations of the semimetal through the modification of hopping parameters. This modification results in the appearance of emergent gauge field and the coordinate dependent anisotropic Fermi velocity. The latter may also be interpreted as emergent gravitational field. (Following “Emergent Horava gravity in graphene” by G.E. Volovik\, M.A. Zubkov\, arXiv:1305.4665 [cond-mat.mes-hall]\, 10.1016/j.aop.2013.11.003 Annals Phys. 340 (2014) 352-368\, “Emergent geometry experienced by fermions in graphene in the presence of dislocations” by G.E. Volovik\, M.A. Zubkov. arXiv:1412.2683 [cond-mat.mes-hall]\, 10.1016/j.aop.2015.03.005 Annals Phys. 356 (2015) 255-268\, “Emergent gravity in the cubic tight-binding model of Weyl semimetal in the presence of elastic deformations” by Alberto Cortijo\, M.A. Zubkov\, arXiv:1508.04462 [cond-mat.mes-hall] 10.1016/j.aop.2016.01.006. Annals Phys. 366 (2016) 45-56.) CATEGORIES:Emergent gravity in graphene and in Dirac/Weyl semimetals URL:https://www.lps.u-psud.fr/spip.php?article2849&id_evenement=128 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Transport of naturally indirect excitons in wide band-gap semiconductor quantum wells - Pierre Lefebvre UID:20160913T124619-a2839-e119@https://www.lps.u-psud.fr DTSTAMP:20160913T124619 DTSTART:20161019T103000 DTEND:20161019T113000 CREATED:20160913T124619 LAST-MODIFIED:20160913T124619 LOCATION:Bât T-18 – Parc Club Orsay ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Transport of naturally indirect excitons in wide band-gap semiconductor quantum wells - Pierre Lefebvre URL:https://www.lps.u-psud.fr/spip.php?article2839&id_evenement=119 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Fete de la Science 2016 UID:20160920T171504-a2836-e121@https://www.lps.u-psud.fr DTSTAMP:20160920T171504 DTSTART;VALUE=DATE:20161014 DTEND;VALUE=DATE:20161017 CREATED:20160920T171504 LAST-MODIFIED:20160920T171504 ORGANIZER;CN=root[:mailto:thi-hong-loan.nguyen@u-psud.fr] DESCRIPTION:FETE DE LA SCIENCE édition 2016 Visites\, animations\, expériences pour les petits et les grands. RV le 16 octobre au LPS CATEGORIES:Fete de la Science 2016 URL:https://www.lps.u-psud.fr/spip.php?article2836&id_evenement=121 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: - Oliver Bäumchen UID:20160801T084054-a2830-e113@https://www.lps.u-psud.fr DTSTAMP:20160801T084054 DTSTART:20161014T110000 DTEND:20161014T120000 CREATED:20160801T084054 LAST-MODIFIED:20160818T073645 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Life in Complex Geometries : Curvature-guided Motility and Adhesion of Microalgae at Interfaces - Oliver Bäumchen URL:https://www.lps.u-psud.fr/spip.php?article2830&id_evenement=113 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY: T-square resistivity in SrTiO3 and other dilute metals UID:20161005T100722-a2848-e127@https://www.lps.u-psud.fr DTSTAMP:20161005T100722 DTSTART:20161013T110000 DTEND:20161013T120000 CREATED:20161005T100722 LAST-MODIFIED:20161009T203301 LOCATION:Parc Club bât 23-25\, salle 215 1er étage ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:Kamran Behnia DESCRIPTION:Doping a semiconductor will eventually lead to the emergence of a metallic ground state. In contrast to silicon and germanium\, infinitesimal doping transforms strontium titanate (SrTiO3) to a metal. Thanks to its long Bohr radius\, the dilute metallic state hosts extremely mobile carriers in a shallow Fermi sea over a seafloor carved by distant dopants [1]\, leading to the observation of quantum oscillations at moderate magnetic fields[2]. In Fermi liquids\, electron-electron scattering generates a distinct contribution to electrical resistivity following quadratic temperature dependence. In the case of heavy-electron metals\, A\, the prefactor of this T2 term becomes orders of magnitude larger than in ordinary metals and scales with the square of the electronic specific heat. This is known as the Kadowaki-Woods plot [3]. We have found that in SrTiO3\, A can be tuned over four orders of magnitude. Mysteriously\, the behavior persists in the single-band and dilute limit. This happens despite the absence of two known mechanisms for T2 behavior\, distinct electron reservoirs and Umklapp processes [4]. We show that according to available data\, the magnitude of A in many dilute metals is loosely linked to the amplitude of their Fermi energy. References : 1. K. Behnia\, J. Phys. Condens. Matt. 27\, 375501 (2015) 2. X. Lin\, Z. Zhu\, B. Fauqué and K. Behnia\, Phys. Rev. X 3\, 021002 (2013) 3. K. Kadowaki ; S.B. Woods Solid State Communications. 58\, 507 (1986) 4. X. Lin\, B. Fauqué and K. Behnia\, Science 349\, 945 (2015) CATEGORIES: T-square resistivity in SrTiO3 and other dilute metals URL:https://www.lps.u-psud.fr/spip.php?article2848&id_evenement=127 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Accelerated thermalization and adiabaticity shortcuts - Emmanuel Trizac UID:20160624T133352-a2827-e111@https://www.lps.u-psud.fr DTSTAMP:20160624T133352 DTSTART:20161007T110000 DTEND:20161007T120000 CREATED:20160624T133352 LAST-MODIFIED:20160624T133352 ORGANIZER;CN=ABECASSIS[:mailto:abecassis@lps.u-psud.fr] CATEGORIES:Accelerated thermalization and adiabaticity shortcuts - Emmanuel Trizac URL:https://www.lps.u-psud.fr/spip.php?article2827&id_evenement=111 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:- Cyrille Hamon UID:20160831T105426-a2832-e115@https://www.lps.u-psud.fr DTSTAMP:20160831T105426 DTSTART:20160923T110000 DTEND:20160923T120000 CREATED:20160831T105426 LAST-MODIFIED:20160831T105505 ORGANIZER;CN=François Boulogne[:mailto:boulogne@lps.u-psud.fr] CATEGORIES:Hierarchical Self-Assembly of Gold Nanoparticles into Patterned Plasmonic Nanostructures - Cyrille Hamon URL:https://www.lps.u-psud.fr/spip.php?article2832&id_evenement=115 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Universal Fermi liquid crossover and quantum criticality in a mesoscopic device UID:20160912T145448-a2837-e117@https://www.lps.u-psud.fr DTSTAMP:20160912T145448 DTSTART:20160915T110000 DTEND:20160915T120000 CREATED:20160912T145448 LAST-MODIFIED:20160912T145615 LOCATION:Parc Club RDC bat 18-20 ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:GERGELY ZARAND DESCRIPTION:The microscopic origins of quantum phase transitions (QPTs) in complex materials and the fate of the Fermi liquid state at quantum criticality are often debated. Quantum dots and mesoscopic circuits provide an experimental framework for realizing known quantum impurity Hamiltonians that can feature tunable second-order QPTs. Here we investigate\, by combining experiments and theory in unprecedented detail\, the quantum phase transitions occurring in a mesoscopic system : a quantum dot coupled to a metallic grain and to lead electrodes [1\,2]. We establish theoretically the complex phase diagram of this device through detailed numerical renormalization group calculations and resolve a former controversy. We show in fact that\, counter-intuitively\, stable lines of non-Fermi liquid spin and charge two-channel Kondo states [3\,4] emerge and coexist with SU(4) physics in this simple device [5]. We demonstrate experimentally\, with support from numerical computations\, a universal crossover from a quantum critical non-Fermi liquid behavior to distinct Fermi liquid ground states in a regime\, where our device realizes a spin-1/2 impurity exchange-coupled equally to two independent electronic reservoirs. Arbitrarily small detuning of the exchange couplings results in conventional screening of the spin by the more strongly coupled channel for energies below a Fermi liquid scale T*. We extract a quadratic dependence of T* on gate voltage close to criticality and validate an asymptotically exact conformal field theory description of the universal crossover between strongly correlated non-Fermi liquid and Fermi liquid states [6]. [1] Potok\, R. M.\, Rau\, I. G.\, Shtrikman\, H.\, Oreg\, Y. & Goldhaber-Gordon\, D. Nature 446\, 167–171 (2007). [2] Keller\, A.J.\, Peeters\, L.\, Moca\, C.P.\, Weymann\, I.\, Mahalu\, D.\, Umansky\, V.\, Zarand\, G. & Goldhaber-Gordon\, D.\, Nature 526\, 237 (2015). [3] Oreg\, Y. & Goldhaber-Gordon\, D. Phys. Rev. Lett. 90\, 136602 (2003). [4] Matveev\, K. A.\, Sov. Phys. JETP 72\, 892 (1991). [5] Le Hur\, K.\, Simon\, P. & Loss\, D.\, Phys. Rev. B 75\, 035332 (2007). [6] Sela\, E.\, Mitchell\, A. K. & Fritz\, L.\, Phys. Rev. Lett. 106\, 147202 (2011). CATEGORIES:Universal Fermi liquid crossover and quantum criticality in a mesoscopic device URL:https://www.lps.u-psud.fr/spip.php?article2837&id_evenement=117 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Séminaire Delphine Coursault UID:20160816T172016-a2831-e114@https://www.lps.u-psud.fr DTSTAMP:20160816T172016 DTSTART:20160909T110000 DTEND:20160909T120000 CREATED:20160816T172016 LAST-MODIFIED:20160816T172030 ORGANIZER;CN=Doru Constantin[:mailto:doru.constantin@u-psud.fr] ATTENDEE:Delphine Coursault CATEGORIES:Optically directed assembly and motion of particles : a new route for active matter - Delphine Coursault URL:https://www.lps.u-psud.fr/spip.php?article2831&id_evenement=114 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Novel spectroscopic experiments through probe shaping in the TEM - Johan Verbeeck UID:20160610T092310-a2822-e108@https://www.lps.u-psud.fr DTSTAMP:20160610T092310 DTSTART:20160706T103000 DTEND:20160706T113000 CREATED:20160610T092310 LAST-MODIFIED:20160610T092310 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Novel spectroscopic experiments through probe shaping in the TEM - Johan Verbeeck URL:https://www.lps.u-psud.fr/spip.php?article2822&id_evenement=108 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Computational Design of Nanoporous Materials - Miguel Jorge UID:20160624T133100-a2826-e110@https://www.lps.u-psud.fr DTSTAMP:20160624T133100 DTSTART:20160701T110000 DTEND:20160701T120000 CREATED:20160624T133100 LAST-MODIFIED:20160624T133100 ORGANIZER;CN=ABECASSIS[:mailto:abecassis@lps.u-psud.fr] CATEGORIES:Computational Design of Nanoporous Materials - Miguel Jorge URL:https://www.lps.u-psud.fr/spip.php?article2826&id_evenement=110 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Supercritical Angle Fluorescence : from microscopy to nanoscopy - Sandrine Leveque-Fort UID:20160421T103442-a2776-e95@https://www.lps.u-psud.fr DTSTAMP:20160421T103442 DTSTART:20160624T110000 DTEND:20160624T123000 CREATED:20160421T103442 LAST-MODIFIED:20160606T164036 ORGANIZER;CN=ABECASSIS[:mailto:abecassis@lps.u-psud.fr] CATEGORIES:Supercritical Angle Fluorescence : from microscopy to nanoscopy - Sandrine Leveque-Fort URL:https://www.lps.u-psud.fr/spip.php?article2776&id_evenement=95 SEQUENCE:1 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Non-symmetrized noise in a quantum dot : Interpretation in terms of energy transfer and coherent superposition of scattering paths - Adeline Crépieux UID:20160620T090318-a2823-e109@https://www.lps.u-psud.fr DTSTAMP:20160620T090318 DTSTART:20160622T103000 DTEND:20160622T113000 CREATED:20160620T090318 LAST-MODIFIED:20160620T090318 LOCATION:Bât T-18 – Parc Club Orsay ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Non-symmetrized noise in a quantum dot : Interpretation in terms of energy transfer and coherent superposition of scattering paths - Adeline Crépieux URL:https://www.lps.u-psud.fr/spip.php?article2823&id_evenement=109 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Photoémission et électro-émission des semi-conducteurs en affinité négative - Jacques Peretti UID:20160609T140230-a2821-e107@https://www.lps.u-psud.fr DTSTAMP:20160609T140230 DTSTART:20160615T103000 DTEND:20160615T113000 CREATED:20160609T140230 LAST-MODIFIED:20160609T143620 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Photoémission et électro-émission des semi-conducteurs en affinité négative - Jacques Peretti URL:https://www.lps.u-psud.fr/spip.php?article2821&id_evenement=107 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Engineering Topological Quantum States : From 1D to 2D. UID:20160604T163721-a2819-e105@https://www.lps.u-psud.fr DTSTAMP:20160604T163721 DTSTART:20160609T110000 DTEND:20160609T120000 CREATED:20160604T163721 LAST-MODIFIED:20160604T171135 LOCATION:LPS Bât. 510\, Orsay\, Petit amphi ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:JELENA KLINOVAJA DESCRIPTION:I will present results on exotic states in one-dimensional (Majorana fermions and parafermions) and two-dimensional (edge states in topological insulators) condensed matter systems that have attracted wide attention due to their promise of non-Abelian statistics believed to be useful for topological quantum computing. I discuss systems in which topological properties could be engineered per demand in semiconducting systems. For example\, Majorana fermions can emerge in hybrid systems with proximity pairing in which the usually weak Rashba spin-orbit interaction is replaced by magnetic textures. Here\, I will discuss candidate materials such as semiconducting nanowires\, graphene nanoribbons\, atomic magnetic chains or magnetic semiconductors [1]. One further goal is to go beyond Majorana fermions and to identify systems that can host quasiparticles with more powerful non-Abelian statistics such as parafermions in double semiconducting wires coupled by crossed Andreev reflections [2\,3]. In the second part of my talk\, I will focus on 'strip of stripes model' consisting of weakly coupled one-dimensional semiconducting wires [4-6]\, where interaction effects in the wires can be treated non-perturbatively via bosonization. I will demonstrate that such systems can exhibit the integer or fractional quantum Hall effect [4]\, spin Hall effect [5]\, and anomalous Hall effect [6]. In the fractional regimes\, the quasiparticles have fractional charges and non-trivial Abelian braid statistics. [1] J. Klinovaja and D. Loss\, Phys. Rev. B 86\, 085408 (2012) ; J. Klinovaja and D. Loss\, Phys. Rev. X 3\, 011008 (2013) ; J. Klinovaja and D. Loss\, Phys. Rev. B 88\, 075404 (2013) ; J. Klinovaja\, P. Stano\, A. Yazdani\, and D. Loss\, Phys. Rev. Lett. 111\, 186805 (2013). [2] J. Klinovaja and D. Loss\, Phys. Rev. B 90\, 045118 (2014). [3] J. Klinovaja\, A. Yacoby\, and D. Loss\, Phys. Rev. B 90\, 155447 (2014). [4] J. Klinovaja and D. Loss\, Phys. Rev. Lett. 111\, 196401 (2013) ; J. Klinovaja and D. Loss\, Eur. Phys. J. B 87\, 171 (2014). [5] J. Klinovaja and Y. Tserkovnyak\, Phys. Rev. B 90\, 115426 (2014). [6] J. Klinovaja\, Y. Tserkovnyak\, and D. Loss\, Phys. Rev. B 91\, 085426 (2015). CATEGORIES:Engineering Topological Quantum States : URL:https://www.lps.u-psud.fr/spip.php?article2819&id_evenement=105 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Anomalous Josephson effect as a probe of topological superconductivity - Manuel Houzet UID:20160602T124741-a2818-e104@https://www.lps.u-psud.fr DTSTAMP:20160602T124741 DTSTART:20160608T103000 DTEND:20160608T113000 CREATED:20160602T124741 LAST-MODIFIED:20160602T132131 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Anomalous Josephson effect as a probe of topological superconductivity - Manuel Houzet URL:https://www.lps.u-psud.fr/spip.php?article2818&id_evenement=104 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Doppler shift picture of the Dzyaloshinskii-Moriya interaction - Gen Tatara UID:20160606T100836-a2820-e106@https://www.lps.u-psud.fr DTSTAMP:20160606T100836 DTSTART:20160606T140000 DTEND:20160606T150000 CREATED:20160606T100836 LAST-MODIFIED:20160606T104227 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Doppler shift picture of the Dzyaloshinskii-Moriya interaction - Gen Tatara URL:https://www.lps.u-psud.fr/spip.php?article2820&id_evenement=106 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Non-Abelian electromagnetism in Josephson junctions UID:20160529T221108-a2815-e102@https://www.lps.u-psud.fr DTSTAMP:20160529T221108 DTSTART:20160602T110000 DTEND:20160602T120000 CREATED:20160529T221108 LAST-MODIFIED:20160529T221118 LOCATION:LPS\, Bât. 510\, Orsay\, Moyen Amphi ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:François KONSCHELLE DESCRIPTION:The combination of spin-orbit interaction and superconducting correlation has attracted more and more interests over the last years. One reason is the possibility to generate the topological superconducting regime\, when unpaired Majorana modes emerge naturally at the edges of 1D wires. However\, the understanding of the complete phenomenology associated to these systems requires further elaborations. The goal of this presentation is to explore a few spin and charge phenomenology of superconducting heterostructures outside the topological regime. A modern version of the quasi-classic and transport equations will be presented\, when charges and spin degrees of freedom are accounted for on the same footing\, generalizing the covariant gradient expansion towards its non-Abelian sector. The resulting equations and observables exhibit intrinsic charge and spin coupling\, leading to some magneto-electric effects. One of such spin-Hall-like effects is the Edelstein one\, predicted to exist in polar superconductivity. In a bulk superconductor\, it results a generation of a spin-polarization by a biased current. The inverse Edelstein effect\, or spin-galvanic effect\, corresponds to the generation of a phase gradient when a spin-splitting field applies to a superconductor with spin-orbit coupling. The corresponding phenomenology in systems with proximity effect will be elucidated\, with particular emphasis on the generation of an anomalous phase-shift in Josephson junctions. CATEGORIES:Non-Abelian electromagnetism in Josephson junctions : URL:https://www.lps.u-psud.fr/spip.php?article2815&id_evenement=102 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Spotting the elusive Majorana under the microscope - Ali Yazdani UID:20160601T110948-a2817-e103@https://www.lps.u-psud.fr DTSTAMP:20160601T110948 DTSTART:20160601T103000 DTEND:20160601T113000 CREATED:20160601T110948 LAST-MODIFIED:20160601T114339 ORGANIZER;CN=HOARAU [:mailto:hoarau@lps.u-psud.fr] CATEGORIES:Spotting the elusive Majorana under the microscope - Ali Yazdani URL:https://www.lps.u-psud.fr/spip.php?article2817&id_evenement=103 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Foam Structure and Rheology : The shape and feel of random soap froth - Andy Kraynik UID:20160418T160015-a2778-e94@https://www.lps.u-psud.fr DTSTAMP:20160418T160015 DTSTART:20160527T110000 DTEND:20160527T120000 CREATED:20160418T160015 LAST-MODIFIED:20160418T160015 ORGANIZER;CN=ABECASSIS[:mailto:abecassis@lps.u-psud.fr] CATEGORIES:Foam Structure and Rheology : The shape and feel of random soap froth - Andy Kraynik URL:https://www.lps.u-psud.fr/spip.php?article2778&id_evenement=94 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Théorie des jeux à champ moyen : une approche de type Schrödinger non-linéaire UID:20160515T222951-a2810-e101@https://www.lps.u-psud.fr DTSTAMP:20160515T222951 DTSTART:20160519T110000 DTEND:20160519T120000 CREATED:20160515T222951 LAST-MODIFIED:20160515T223011 LOCATION:LPS\, Bât. 510\, Orsay\, Petit Amphi ORGANIZER;CN=civelli[:mailto:marcello.civelli@u-psud.fr] ATTENDEE:DENIS ULLMO DESCRIPTION:La théorie des jeux à champ moyen est un domaine de recherche assez récent\, à la frontière entre les mathématiques appliquées\, les sciences sociales et la physique. Il a été initié il y a une dizaine d'années par Pierre-Louis Lions et Jean-Michel Lasry comme un outil permettant de modéliser certains phénomènes sociaux impliquant un nombre important d'acteurs — à travers une approche de type théorie des jeux — tout en gardant un niveau raisonnable de simplicité grâce au concept de champ moyen importé de la physique. Dans ce séminaire\, après une introduction générale à la théorie des jeux à champ moyen\, je montrerais qu'il existe un lien\, formel mais assez profond\, entre une classe importante de ces modèles et l'équation de Schrödinger non linéaire (ou de Gross-Pitaevskii) qu'on rencontre dans de nombreuses circonstances en physique\, et qui décrit en particulier l'évolution d'un ensemble de bosons en interaction. Ce lien permet de développer des schémas d'approximation très efficaces pour résoudre les équations de la théorie des jeux à champ moyen. Je montrerais en particulier comment on peut obtenir de cette manière une compréhension à la fois détaillée et intuitive d'un modèle de dynamique de population dans lequel il y a une coordination forte entre les agents. CATEGORIES:Théorie des jeux à champ moyen : une approche de type Schrödinger non-linéaire URL:https://www.lps.u-psud.fr/spip.php?article2810&id_evenement=101 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:The chemical and physical factors driving the self assembly of proteins - Jennifer McManus UID:20160509T135857-a2784-e100@https://www.lps.u-psud.fr DTSTAMP:20160509T135857 DTSTART:20160513T110000 DTEND:20160513T140000 CREATED:20160509T135857 LAST-MODIFIED:20160509T145524 ORGANIZER;CN=ABECASSIS[:mailto:abecassis@lps.u-psud.fr] CATEGORIES:The chemical and physical factors driving the self assembly of proteins - Jennifer McManus URL:https://www.lps.u-psud.fr/spip.php?article2784&id_evenement=100 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT BEGIN:VEVENT SUMMARY:Le cheveu : de l'atome a la mode. présenté par Jean Doucet\, LPS-Université Paris Sud\, Orsay UID:20160425T142936-a2779-e96@https://www.lps.u-psud.fr DTSTAMP:20160425T142936 DTSTART:20160512T133000 DTEND:20160512T153000 CREATED:20160425T142936 LAST-MODIFIED:20160425T142935 ORGANIZER;CN=Marie-France Mariotto[:mailto:mariotto@lps.u-psud.fr] ATTENDEE:Jean Doucet CATEGORIES:Le cheveu : de l'atome à la mode. Présenté par Jean Doucet\, LPS-Université Paris Sud\, Orsay URL:https://www.lps.u-psud.fr/spip.php?article2779&id_evenement=96 SEQUENCE:0 STATUS:CONFIRMED END:VEVENT END:VCALENDAR