中国物理B ›› 2014, Vol. 23 ›› Issue (2): 27201-027201.doi: 10.1088/1674-1056/23/2/027201

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

The effect of k-cubic Dresselhaus spin–orbit coupling on the decay time of persistent spin helix states in semiconductor two-dimensional electron gases

柴政, 胡茂金, 王瑞强, 胡梁宾   

  1. Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510631, China
  • 收稿日期:2013-04-08 修回日期:2013-07-24 出版日期:2013-12-12 发布日期:2013-12-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10874049).

The effect of k-cubic Dresselhaus spin–orbit coupling on the decay time of persistent spin helix states in semiconductor two-dimensional electron gases

Chai Zheng (柴政), Hu Mao-Jin (胡茂金), Wang Rui-Qiang (王瑞强), Hu Liang-Bin (胡梁宾)   

  1. Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510631, China
  • Received:2013-04-08 Revised:2013-07-24 Online:2013-12-12 Published:2013-12-12
  • Contact: Hu Liang-Bin E-mail:lbhu26@yahoo.com
  • About author:72.10.-d; 72.20.-i; 73.50.Jt
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10874049).

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摘要： We study the theoretical effect of k-cubic (i.e. cubic-in-momentum) Dresselhaus spin–orbit coupling on the decay time of persistent spin helix states in semiconductor two-dimensional electron gases. We show that the decay time of persistent spin helix states may be suppressed substantially by k-cubic Dresselhaus spin–orbit coupling, and after taking the effect of k-cubic Dresselhaus spin–orbit interaction into account, the theoretical results obtained accord both qualitatively and quantitatively with other recent experimental results.

关键词: persistent spin helix state, Rashba spin–, orbit coupling, k-cubic Dresselhaus spin–, orbit coupling, decay time

Abstract: We study the theoretical effect of k-cubic (i.e. cubic-in-momentum) Dresselhaus spin–orbit coupling on the decay time of persistent spin helix states in semiconductor two-dimensional electron gases. We show that the decay time of persistent spin helix states may be suppressed substantially by k-cubic Dresselhaus spin–orbit coupling, and after taking the effect of k-cubic Dresselhaus spin–orbit interaction into account, the theoretical results obtained accord both qualitatively and quantitatively with other recent experimental results.

Key words: persistent spin helix state, Rashba spin–orbit coupling, k-cubic Dresselhaus spin–orbit coupling, decay time

中图分类号:  (Theory of electronic transport; scattering mechanisms)

  • 72.10.-d
72.20.-i (Conductivity phenomena in semiconductors and insulators) 73.50.Jt (Galvanomagnetic and other magnetotransport effects)