Residual bulk viscosity of a disordered two-dimensional electron gas
Abstract
Nonzero bulk viscosity signals breaking of the scale invariance. We demonstrate that disorder in a two-dimensional noninteracting electron gas in a perpendicular magnetic field results in nonzero disorder-averaged bulk viscosity. We derive an analytic expression for the bulk viscosity within the self-consistent Born approximation. This residual bulk viscosity provides the lower bound for the bulk viscosity of 2D interacting electrons at low enough temperatures.
- Publication:
-
Physical Review B
- Pub Date:
- June 2021
- DOI:
- 10.1103/PhysRevB.103.235305
- arXiv:
- arXiv:2102.10533
- Bibcode:
- 2021PhRvB.103w5305Z
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 10 pages, 2 figures