Hydrodynamic electron flow and Hall viscosity

Thomas Scaffidi, Nabhanila Nandi, Burkhard Schmidt, Andrew P. Mackenzie, Joel E. Moore

Research output: Contribution to journalArticlepeer-review

155 Citations (Scopus)

Abstract

In metallic samples 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.

Original languageEnglish
Article number226601
Number of pages5
JournalPhysical Review Letters
Volume118
Issue number22
DOIs
Publication statusPublished - 2 Jun 2017

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