Article (Scientific journals)
Electron hydrodynamics of anomalous Hall materials
Hasdeo, Eddwi Hesky; Ekström, Carl Johan Ingvar; Idrisov, Edvin et al.
2021In Physical Review. B, 103 (12), p. 125106
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Keywords :
Hydrodynamics; topology; 2D materials
Abstract :
[en] We study two-dimensional electron systems in the hydrodynamic regime. We show that a geometrical Berry curvature modifies the effective Navier-Stokes equation for viscous electron flow in topological materials. For small electric fields, the Hall current becomes negligible compared to the viscous longitudinal current. In this regime, we highlight an unconventional Poiseuille flow with an asymmetric profile and a deviation of the maximum of the current from the center of the system. In a two-dimensional infinite geometry, the Berry curvature leads to current whirlpools and an asymmetry of potential profile. This phenomenon can be probed by measuring the asymmetric non-local resistance profile.
Disciplines :
Physics
Author, co-author :
Hasdeo, Eddwi Hesky  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Ekström, Carl Johan Ingvar ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Idrisov, Edvin ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Schmidt, Thomas ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
External co-authors :
no
Language :
English
Title :
Electron hydrodynamics of anomalous Hall materials
Publication date :
03 March 2021
Journal title :
Physical Review. B
ISSN :
2469-9969
Publisher :
American Physical Society
Volume :
103
Issue :
12
Pages :
125106
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
Funders :
ATTRACT 7556175; CORE 13579612 & CORE 11352881
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