Influence of impurity-induced spin-orbit scattering on persistent spin helix

Shijing Gong; Zhongqin Yang

doi:10.1016/j.physleta.2009.08.030

Influence of impurity-induced spin-orbit scattering on persistent spin helix

Shijing Gong, Zhongqin Yang^*

^*Corresponding author for this work

Fudan University

Research output: Contribution to journal › Article › peer-review

Abstract

The persistent spin helix discovered in intrinsic spin-orbit coupled systems previously is reexamined using the motion equations of Green's functions by considering the effect of extrinsic impurity-induced spin-orbit coupling. We find both the intrinsic and extrinsic spin-orbit couplings can increase the excitation energy of spin helix. They together can reduce drastically the lifetime of the spin helix, making it severely departure from the ideal infinite value. The effect of impurity density on spin helix is also analyzed. The results may be helpful to understand experimental measurements on spin helix.

Original language	English
Pages (from-to)	3892-3896
Number of pages	5
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	373
Issue number	42
DOIs	https://doi.org/10.1016/j.physleta.2009.08.030
State	Published - 12 Oct 2009
Externally published	Yes

Keywords

Green's function method
Lifetime
Persistent spin helix
Spin-orbit coupling

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10.1016/j.physleta.2009.08.030

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abstract = "The persistent spin helix discovered in intrinsic spin-orbit coupled systems previously is reexamined using the motion equations of Green's functions by considering the effect of extrinsic impurity-induced spin-orbit coupling. We find both the intrinsic and extrinsic spin-orbit couplings can increase the excitation energy of spin helix. They together can reduce drastically the lifetime of the spin helix, making it severely departure from the ideal infinite value. The effect of impurity density on spin helix is also analyzed. The results may be helpful to understand experimental measurements on spin helix.",

keywords = "Green's function method, Lifetime, Persistent spin helix, Spin-orbit coupling",

author = "Shijing Gong and Zhongqin Yang",

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AU - Gong, Shijing

AU - Yang, Zhongqin

PY - 2009/10/12

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N2 - The persistent spin helix discovered in intrinsic spin-orbit coupled systems previously is reexamined using the motion equations of Green's functions by considering the effect of extrinsic impurity-induced spin-orbit coupling. We find both the intrinsic and extrinsic spin-orbit couplings can increase the excitation energy of spin helix. They together can reduce drastically the lifetime of the spin helix, making it severely departure from the ideal infinite value. The effect of impurity density on spin helix is also analyzed. The results may be helpful to understand experimental measurements on spin helix.

AB - The persistent spin helix discovered in intrinsic spin-orbit coupled systems previously is reexamined using the motion equations of Green's functions by considering the effect of extrinsic impurity-induced spin-orbit coupling. We find both the intrinsic and extrinsic spin-orbit couplings can increase the excitation energy of spin helix. They together can reduce drastically the lifetime of the spin helix, making it severely departure from the ideal infinite value. The effect of impurity density on spin helix is also analyzed. The results may be helpful to understand experimental measurements on spin helix.

KW - Green's function method

KW - Lifetime

KW - Persistent spin helix

KW - Spin-orbit coupling

UR - https://www.scopus.com/pages/publications/70349098760

U2 - 10.1016/j.physleta.2009.08.030

DO - 10.1016/j.physleta.2009.08.030

M3 - 文章

AN - SCOPUS:70349098760

SN - 0375-9601

VL - 373

SP - 3892

EP - 3896

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 42

ER -

Influence of impurity-induced spin-orbit scattering on persistent spin helix

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Keywords

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