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Electron Density Dependence of in-plane Spin Relaxation Anisotropy in GaAs/AlGaAs Two-Dimensional Electron Gas

Baoli Liu·Hongming Zhao·Jia Wang·Linsheng Liu·Wenxin Wang·Haijun Zhu·Dongmin Chen
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Abstract

We investigated the spin dynamics of two-dimensional electrons in (001) GaAs/AlGaAs heterostructure using the time resolved Kerr rotation technique under a transverse magnetic field. The in-plane spin lifetime is found to be anisotropic below 150k due to the interference of Rashba and Dresselhaus spin-orbit coupling and D'yakonov-Perel' spin relaxation. The ratio of in-plane spin lifetimes is measured directly as a function of temperature and pump power, showing that the electron density in 2DEG channel strongly affects the Rashba spin-orbit coupling.

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Baoli Liu, Hongming Zhao, Jia Wang, Linsheng Liu, Wenxin Wang, Haijun Zhu, Dongmin Chen. 2012-03-29. Electron Density Dependence of in-plane Spin Relaxation Anisotropy in GaAs/AlGaAs Two-Dimensional Electron Gas. https://doi.org/10.1063/1.2713353

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