Weak antilocalization in high-mobility two-dimensional systems
Weak antilocalization in high-mobility two-dimensional systems
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DOI：
10.1103/physrevb.71.235310
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发表时间：
2004-12
影响因子：
3.7
通讯作者：
L. Golub
中科院分区：
文献类型：
--
作者：
L. Golub
针对高移动性二维系统开发了弱反局域化理论。考虑了 Rashba 和 Dresselhaus 类型的自旋轨道相互作用。反常磁阻是在整个经典弱磁场范围内和任意强度的自旋轨道分裂中计算的。所获得的表达式对于弱局域化的弹道和扩散区域均有效。所提出的理论包括背向散射和非背向散射对电导率的贡献。结果表明，早期理论并未描述高迁移率结构中电导率的磁场依赖性。
A theory of weak antilocalization is developed for high-mobility two-dimensional systems. Spin-orbit interaction of Rashba and Dresselhaus types is taken into account. Anomalous magnetoresistance is calculated in the whole range of classically weak magnetic fields and for arbitrary strength of spin-orbit splitting. The obtained expressions are valid for both ballistic and diffusive regimes of weak localization. The proposed theory includes both backscattering and nonbackscattering contributions to the conductivity. It is shown that magnetic field dependence of conductivity in high-mobility structures is not described by earlier theories.