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X-ORIGINAL-URL:https://www.lps.u-psud.fr/
X-WR-CALNAME:Laboratoire de physique des Solides
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BEGIN:VEVENT
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DTSTART;TZID=Europe/Paris:20231207T110000
DTEND;TZID=Europe/Paris:20231207T120000
DTSTAMP:20231201T175900
UID:MEC-1e8eec0db325b87b0f57b5056efd8afb@lps.u-psud.fr
CREATED:20231201
LAST-MODIFIED:20231201
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:P.CHUDZINSKI: On the edge of Mott(ness): Li0.9Mo6O17, a curious quasi-1D material that sometimes superconducts
DESCRIPTION:\nI will start with a small digression about sine-Gordon model in low dimensional systems and the Berezinskii-Kosterlitz-Thouless (BKT) phase diagram. Then I will move on to introduce the material, with its long history that spans over the last four decades. It belongs to a family of purple bronzes, whose other members were early on shown to be Peierls-CDW compounds, while the physics of this Li-compound has remained elusive. From the beginning of 21st century experimental evidence has been mounting, indicating that it may be a rare realization of Tomonaga-Luttinger liquid in a solid state material. However, its lowest energy physics does not obey the canonical picture and the origin of a mysterious upturn of resistivity was understood only few years ago [1].\n\nThen I will present our most recent findings that directly probe the parent state of superconductivity [2]. We were able to show that the Li0.9Mo6O17 is in fact in the higher symmetry state, right on the edge of Mott insulating region in the BKT picture. I will explain how the specific properties of Li0.9Mo6O17 enabled us to measure directly the BKT renormalization group flow and what conclusions we were able to draw from that.\n\n[1] J. Lu et al., Sci. Adv. 5, eaar8027 (2019).\n[2] P. Chudzinski et al., Science 382, 792-796 (2023).\n\n
URL:https://www.lps.u-psud.fr/en/events/p-chudzinski-on-the-edge-of-mottness-li0-9mo6o17-a-curious-quasi-1d-material-that-sometimes-superconducts/
CATEGORIES:Condensed Matter Theory Seminar
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