Electron hydrodynamics in anisotropic materials
Name
s41467-020-18553-y.pdf
Description
Published version
Size
2.2 MB
Format
Adobe PDF
Checksum (MD5)
be1119050353bc3d78095bb3e520587c
Author(s)
Varnavides, Georgios
Jermyn, Adam S
Anikeeva, Polina
Felser, Claudia
Narang, Prineha
Date Issued
2020
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Citation
Varnavides, Georgios, Jermyn, Adam S, Anikeeva, Polina, Felser, Claudia and Narang, Prineha. 2020. "Electron hydrodynamics in anisotropic materials." Nature Communications, 11 (1).
Version
Final published version
Abstract
© 2020, The Author(s). Rotational invariance strongly constrains the viscosity tensor of classical fluids. When this symmetry is broken in anisotropic materials a wide array of novel phenomena become possible. We explore electron fluid behaviors arising from the most general viscosity tensors in two and three dimensions, constrained only thermodynamics and crystal symmetries. We find nontrivial behaviors in both two- and three-dimensional materials, including imprints of the crystal symmetry on the large-scale flow pattern. Breaking time-reversal symmetry introduces a non-dissipative Hall component to the viscosity tensor, and while this vanishes for 3D isotropic systems we show it need not for anisotropic materials. Further, for such systems we find that the electronic fluid stress can couple to the vorticity without breaking time-reversal symmetry. Our work demonstrates the anomalous landscape for electron hydrodynamics in systems beyond graphene, and presents experimental geometries to quantify the effects of electronic viscosity.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1038/S41467-020-18553-Y
