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arXiv 0708.2565cond-mat.mes-hall
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半导体中电子转动与自旋的耦合

Coupling of electron rotation with spin in semiconductors

Yuri A. Serebrennikov

摘要:

考虑到一般半导体价带内的自旋轨道耦合,导带电子的有效质量哈密顿量中有一个标量自旋轨道转动项,这个结果是在多带包络函数近似下得到的。从根本上说,自旋-轨道-旋转耦合可以用纯粹的几何术语来描述,这是由于自旋-轨道混合Kramers-偶极子的分量在倒数动量空间中循环演化期间获得的Berry相位的差异。

英文摘要:

Account of an intrinsic spin-orbit coupling in the valence bands of common semiconductors yields the scalar spin-orbit-rotation term in the effective-mass Hamiltonian of the conduction-band electron. This result is obtained within the multiband envelope function approximation. Fundamentally, the spin-orbit-rotation coupling can be described in purely geometric terms as a consequence of the difference in the Berry phase acquired by the components of the spin-orbitally mixed Kramers-doublet during its cyclic evolution in the reciprocal momentum space.

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