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DTSTART;TZID=Europe/Paris:20260203T140000
DTEND;TZID=Europe/Paris:20260203T153000
DTSTAMP:20260408T050455
CREATED:20260128T084640Z
LAST-MODIFIED:20260130T064658Z
UID:11796-1770127200-1770132600@fermi.univ-tlse3.fr
SUMMARY:Conductivité de Hall thermique dans les aimants quantiques à partir de l’équation cinétique. - (Léo Mangeolle / LPT / Seminar). -3/02/2026\, 14H
DESCRIPTION:Séminaire LPT \nLéo Mangeolle (Université technique de Munich) \nSeminar LPT\, 3/02/2026\, 14H\, 3R4\, salle de conférence \nSummary\nThermal Hall conductivity has recently emerged as an experimentally accessible property of insulating materials. Theoretical understanding thereof has remained a challenge\, in particular since the breaking of time-reversal symmetry by neutral particles is nontrivial and can emerge from multiple mechanisms (intrinsic semiclassical dynamics\, skew-scattering\, disorder side-jump effects\, etc). In this seminar\, I will show that many of these effects can be studied together within a kinetic (Boltzmann-like) formalism. First\, I will briefly discuss inelastic skew-scattering of energy-carrying bosons by other collective excitations\, with applications to phonon-magnon interactions in antiferromagnets. Second\, I will present how anomalous contributions to the semiclassical dynamics of carriers can be incorporated in a rigorous way\, yielding the intrinsic thermal Hall effect of chiral bosons (e.g. magnons in frustrated magnets). Finally\, I will discuss side-jump phenomena\, a mixed effect of disorder scattering and semiclassical dynamics that may explain some puzzling experimental facts.
URL:https://fermi.univ-tlse3.fr/event/tba-leo-mangeolle-lpt-seminar-3-02-2026-14h/
LOCATION:Salle de conférence\, Bâtiment 3R4
CATEGORIES:Events,LPT,Seminars
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