Assa Auerbach
Technion-Israel Institute of Technology, Haifa, Israel
Date
26 April 2023
Host
Eugene Demler
Title
What Carries the Hall Current in Metals and Superconductors?
Abstract
The Hall coefficient has long been used to characterize the charge carriers as Fermi surface quasiparticles. However, unexpected Hall coefficient sign reversals and divergences (a.k.a. “Hall anomalies”) are commonly observed in strongly correlated metals and flux flowing superconductors. The validity of band theory and Boltzmann equation is called into question. I will describe recent advances in quantum transport theory which allows us to calculate the Hall coefficients from models of strong interactions, and to identify the “moving parts” which give rise to these Hall anomalies.
Assa Auerbach (left) with Eugene Demler (right) (ETH Zürich/D-PHYS/Kilian J. Kessler)
