Intrinsic Spin Hall Effect with Spin-Tensor-Momentum Coupling
Mesoscale and Nanoscale Physics
2020-02-04 v2
Abstract
We derive the spin continuity equation by using the Noether's theorem. A new type of spin-tensor Hall current is found in the continuity equation. The spin-tensor Hall current is originating from the coupling of the spin-tensor and the momentum. The intrinsic spin Hall effect in the two-dimensional fermion model with the spin-orbit coupling and spin-tensor-momentum coupling is studied. The total spin Hall conductivity with the presence of the spin-tensor Hall current is calculated. The numerical results indicate that the total spin Hall conductivity is enhanced by the contribution of the spin-tensor-momentum coupling. The spin-tensor-momentum coupling may increase the spin transport in the intrinsic spin Hall effect.
Keywords
Cite
@article{arxiv.1907.00319,
title = {Intrinsic Spin Hall Effect with Spin-Tensor-Momentum Coupling},
author = {Yong-Ping Fu and Fei-Jie Huang and QI-Hui Chen},
journal= {arXiv preprint arXiv:1907.00319},
year = {2020}
}