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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:20251216T110000
DTEND;TZID=Europe/Paris:20251216T180000
DTSTAMP:20251203T092500
UID:MEC-7a576629fef88f3e636afd33b09e8289@lps.u-psud.fr
CREATED:20251203
LAST-MODIFIED:20251203
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Léo MANGEOLLE : Thermal Hall conductivity in quantum magnets from the kinetic equation
DESCRIPTION:\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).     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.\n
URL:https://www.lps.u-psud.fr/en/events/leo-mangeolle-thermal-hall-conductivity-in-quantum-magnets-from-the-kinetic-equation/
CATEGORIES:Condensed Matter Theory Seminar,Seminars
ATTACH;FMTTYPE=image/jpeg:https://www.lps.u-psud.fr/wp-content/uploads/2025/12/image_thumb.jpg
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