BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Johanna Erdmenger (University of Würzburg) DTSTART:20200603T100000Z DTEND:20200603T110000Z DTSTAMP:20260404T131150Z UID:QM3/4 DESCRIPTION:Title: Turbulent hydrodynamics in strongly correlated Kagome metals\nby Jo hanna Erdmenger (University of Würzburg) as part of Quantum Matter meets Maths (IST\, Lisbon)\n\n\nAbstract\nA current challenge in condensed matte r physics is the realization of strongly correlated\, viscous electron flu ids. These fluids are not amenable to the perturbative methods of Fermi li quid theory\, but can be described by holography\, that is\, by mapping th em onto a weakly curved gravitational theory via gauge/gravity duality. Th e canonical system considered for realizations has been graphene\, which p ossesses Dirac dispersions at low energies as well as significant Coulomb interactions between the electrons. In this work\, we show that Kagome sys tems with electron fillings adjusted to the Dirac nodes of their band stru cture provide a much more compelling platform for realizations of viscous electron fluids\, including non-linear effects such as turbulence. In part icular\, we find that in stoichiometric Scandium (Sc) Herbertsmithite\, th e fine-structure constant\, which measures the effective Coulomb interacti on and hence reflects the strength of the correlations\, is enhanced by a factor of about 3.2 as compared to graphene\, due to orbital hybridization . We employ holography to estimate the ratio of the shear viscosity over t he entropy density in Sc-Herbertsmithite\, and find it about three times s maller than in graphene. These findings put\, for the first time\, the tur bulent flow regime described by holography within the reach of experiments .\n LOCATION:https://stable.researchseminars.org/talk/QM3/4/ END:VEVENT END:VCALENDAR