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X-WR-CALNAME:Laboratoire de physique des Solides
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DTSTART;TZID=Europe/Paris:20250213T110000
DTEND;TZID=Europe/Paris:20250213T000000
DTSTAMP:20250207T090400
UID:MEC-941c377c73c0efed759c993f1b859526@lps.u-psud.fr
CREATED:20250207
LAST-MODIFIED:20250207
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Marko MILIVOJEVIĆ. Superconducting pairings and topology in Ising superconductors with Rashba spin-orbit coupling: The example of NbSe2
DESCRIPTION:\nMarko MILIVOJEVIĆ, Institute of Informatics, Slovak Academy of Sciences, Slovakia andFaculty of Physics, University of Belgrade, Serbia\n\n\n\nLe résumé :\n\n\n\nThe NbSe2 monolayer with Rashba spin-orbit coupling represents a paradigmatic example of an Ising superconductor on a substrate. Using a single-band model and symmetry analysis, we present general superconducting pairing functions beyond the nearest-neighbour approximation, uncovering new types of gap functions, including the nodal singlet gap function and the triplet non-unitary pairing function that breaks time-reversal symmetry.\n\n\n\n   Our classification, based on the irreducible representations of the C3v symmetry, reveals the intriguing possibility of singlet-triplet mixing within the superconducting pairing function. By exploring the most general form of this mixing, we uncover a spectrum of topological phases that can emerge in the system, alongside their dependence on Fermi-level doping. Our findings highlight that topological superconductivity can not only exist, but also be adjusted by changing the Fermi level. This suggests a potential method for externally controlling the topological states in these systems.\n\n\n\nJ. Haniš, M. Milivojević, and M. Gmitra, Physical Review B 110, 104502 (2024). \n\n\n\nZ. Tajkov, J. Haniš, M. Milivojević, and M. Gmitra, in preparation\n\n\n\nContact: andrej.mesaros@universite-paris-saclay.fr ( mailto:andrej.meszaros@universite-paris-saclay.fr )\n\n\n\n\n
URL:https://www.lps.u-psud.fr/events/marko-milivojevic-superconducting-pairings-and-topology-in-ising-superconductors-with-rashba-spin-orbit-coupling-the-example-of-nbse2/
CATEGORIES:Séminaire de la Théorie de la Matière Condensée,Séminaires
LOCATION:Moyen amphi (LPS) + ONLINE (Zoom)
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