Speaker
Thomas Scaffidi
(U. C. Berkeley)
Description
In metallic systems of small enough size and sufficiently
strong momentum-conserving scattering, the viscosity of the
electron gas can become the dominant process governing
transport. In this regime, momentum is a long-lived quantity
whose evolution is described by an emergent hydrodynamical
theory. Furthermore, breaking time-reversal symmetry leads
to the appearance of an odd component to the viscosity
called the Hall viscosity, which has attracted considerable
attention recently due to its quantized nature in gapped
systems but still eludes experimental confirmation. Based on
microscopic calculations, we discuss how to measure the
effects of both the even and odd components of the viscosity
using hydrodynamic electronic transport in mesoscopic
samples under applied magnetic fields.
