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arXiv 1108.4775cond-mat.mes-hall
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具有任意自旋相互作用的电流守恒Aharonov-Bohm干涉术

Current-Conserving Aharonov-Bohm Interferometry with Arbitrary Spin Interactions

Minchul Lee, Dimitrije Stepanenko

摘要:

我们提出了一个一般的散射矩阵形式主义,保证任意自旋相互作用的导电臂之间的结的电荷守恒。利用我们的理论,我们发现,如果臂中的自旋本征态不正交,即使在双光子结中也会发生自旋翻转散射。我们应用我们的形式主义的Aharonov-Bohm干涉仪组成的$n$型半导体环的Rashba自旋轨道耦合和塞曼分裂。讨论了干涉仪在弱耦合极限和强耦合极限下作为条件自旋开关和无条件自旋开关的特性。

英文摘要:

We propose a general scattering matrix formalism that guarantees the charge conservation at junctions between conducting arms with arbitrary spin interactions. By using our formalism, we find that the spin-flip scattering can happen even at nonmagnetic junctions if the spin eigenstates in arms are not orthogonal. We apply our formalism to the Aharonov-Bohm interferometer consisting of $n$-type semiconductor ring with both the Rashba spin-orbit coupling and the Zeeman splitting. We discuss the characteristics of the interferometer as conditional/unconditional spin switch in the weak/strong-coupling limit, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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