Semiclassical Boltzmann theory of spin Hall effects in giant Rashba systems

doi:10.1007/s11467-017-0720-8

Front. Phys.

2018, Vol. 13

Issue (2) : 137202 https://doi.org/10.1007/s11467-017-0720-8

RESEARCH ARTICLE

Semiclassical Boltzmann theory of spin Hall effects in giant Rashba systems

Cong Xiao(

)

Department of Physics, The University of Texas at Austin, Austin, TX 78712-0264, USA

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Abstract

For the spin Hall effect arising from strong band-structure spi n–orbit coupling, a semiclassical Boltzmann theory reasonably addressing the intriguing disorder effect called side-jump has not yet been developed. This paper describes such a theory in which the key ingredient is the spin-current counterpart of the semiclassical side-jump velocity (introduced in the context of the anomalous Hall effect). Applying this theory to spin Hall effects in a two-dimensional electron gas with giant Rashba spin–orbit coupling, largely enhanced spin Hall angle is found in the presence of magnetic impurities when only the lower Rashba band is partially occupied.

Keywords spin Hall effect semiclassical Boltzmann theory side jump Rashba spin–obit coupling

Corresponding Author(s): Cong Xiao

Issue Date: 25 September 2017

Cite this article:

Cong Xiao. Semiclassical Boltzmann theory of spin Hall effects in giant Rashba systems[J]. Front. Phys. , 2018, 13(2): 137202.

URL:

https://academic.hep.com.cn/fop/EN/10.1007/s11467-017-0720-8
https://academic.hep.com.cn/fop/EN/Y2018/V13/I2/137202

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