Measuring Hall viscosity of graphene's electron fluid

Science
Alexey I BerdyuginDenis A Bandurin

Abstract

An electrical conductor subjected to a magnetic field exhibits the Hall effect in the presence of current flow. Here, we report a qualitative deviation from the standard behavior in electron systems with high viscosity. We found that the viscous electron fluid in graphene responds to nonquantizing magnetic fields by producing an electric field opposite to that generated by the ordinary Hall effect. The viscous contribution is substantial and identified by studying local voltages that arise in the vicinity of current-injecting contacts. We analyzed the anomaly over a wide range of temperatures and carrier densities and extracted the Hall viscosity, a dissipationless transport coefficient that was long identified theoretically but remained elusive in experiments.

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Citations

Nov 2, 2018·Nature Communications·Denis A BandurinGregory Falkovich
Oct 2, 2019·Physical Review Letters·Camilo UlloaR A Duine
Jun 25, 2020·Physical Review. E·Anton SouslovVincenzo Vitelli
Aug 7, 2019·Physical Review Letters·Igor S BurmistrovPavel D Kurilovich
Aug 7, 2019·Physical Review Letters·Michal ShavitGregory Falkovich
Oct 2, 2019·Physical Review Letters·Tobias HolderAdy Stern
Sep 19, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Muhammad Imran
Mar 6, 2021·Physical Review Letters·Adbhut GuptaM J Manfra
May 1, 2021·Physical Review Letters·Vladyslav KoziiJoel E Moore
Apr 13, 2019·Science·Andrew Lucas
Sep 1, 2021·Nature Materials·Xiaolong LiuJ C Séamus Davis
Nov 5, 2021·Nano Letters·Sayanti SamaddarMarkus Morgenstern
Aug 25, 2021·Nature Nanotechnology·Alexander BlockKlaas-Jan Tielrooij

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