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首页> 外文期刊>Physica status solidi, B. Basic research >Quantum and transport lifetimes of a two-dimensional hole gas in the presence of spin-orbit interaction
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Quantum and transport lifetimes of a two-dimensional hole gas in the presence of spin-orbit interaction

机译：自旋轨道相互作用下二维空穴气体的量子和传输寿命

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摘要

We present a simple theoretical approach for evaluating the spin-dependent carrier distribution as well as quantum and transport lifetimes in a two-dimensional hole gas (2DHG) in the presence of spin-orbit interaction (SOI) induced by the Rashba effect. For low temperatures and over a wide range of the sample parameters, the SOI can enhance the mobility of the sample system and the quantum and transport lifetimes of a 2DHG due to background-impurity scattering do not differ significantly between different spin branches. These are mainly due to the unique features of the hole-impurity scattering in the presence of the SOI. A small difference of the quantum lifetimes in different spin branches has been observed experimentally in spin-split two-dimensional electron gas systems. Our results indicate that this interesting observation can be made in spin-split 2DHGs as well. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
机译：我们提出了一种简单的理论方法，用于评估在存在由Rashba效应引起的自旋轨道相互作用（SOI）的情况下二维空穴气体（2DHG）中自旋相关的载流子分布以及量子和运输寿命。对于低温和宽范围的样品参数，SOI可以提高样品系统的迁移率，并且由于背景杂质扩散而导致的2DHG的量子和运输寿命在不同的自旋分支之间不会有显着差异。这些主要是由于在存在SOI的情况下空穴杂质散射的独特特征。在自旋分裂二维电子气系统中，实验观察到了不同自旋分支中量子寿命的微小差异。我们的结果表明，这种有趣的观察结果也可以在自旋分裂的2DHG中进行。 （C）2004 WILEY-VCH Verlag GmbH＆Co. KGaA，Weinheim。

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