[Phys-seminars] 2017-05-10 Condensed Matter Theory Seminar

smoshe smoshe at bgu.ac.il
Tue May 2 21:37:00 IDT 2017


Condensed Matter Theory Seminar

 DATE: 10-05-17

 TIME: 13:30

 PLACE: Physics building (#54) room 207

TITLE: 
Transverse thermoelectric response as a probe for existence of quasiparticles

SPEAKER: 
Dror Orgad, The Hebrew University

ABSTRACT/COMMENTS: 
The electrical Hall conductivities of any anisostropic interacting system with reflection symmetry obey sigma_{xy}= - sigma_{yx}. In contrast, I will show that the analogous relation between the transverse Peltier coefficients, alpha_{xy}= - alpha_{yx}, does not generally hold in the same system, unless a quasiparticle description is valid at low temperatures. This suggests that quasiparticle-free groundstates (so called non-Fermi liquids) may be detected by examining the symmetry properties of the Peltier tensor.


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