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Anomalous spin-related quantum phase in mesoscopic hole rings

机译:介观孔环中与自旋有关的量子相异常

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摘要

We have obtained numerically exact results for the spin-related geometric quantum phases that arise in p-type semiconductor ring structures. The interplay between gate-controllable (Rashba) spin splitting and quantum-confinement-induced mixing between hole-spin states causes a much higher sensitivity of magneto-conductance oscillations to external parameters than previously expected. Our results imply a much-enhanced functionality of hole-ring spin-interference devices and shed new light on recent experimental findings.
机译:我们已经获得了在p型半导体环结构中出现的与自旋有关的几何量子相的精确数值结果。栅极可控(Rashba)自旋分裂与量子自限诱导的空穴自旋状态之间的混合之间的相互作用导致磁导振荡对外部参数的灵敏度比以前预期的要高得多。我们的结果暗示了孔环自旋干涉设备的功能大大增强,并为最近的实验发现提供了新的思路。

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