arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.04524cond-mat.mes-hallcond-mat.str-el
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Aharonov-Casher干涉仪中的近藤效应

Kondo effect in a Aharonov-Casher interferometer

A. V. Parafilo, L. Y. Gorelik, M. N. Kiselev, H. C. Park, R. I. Shekhter

摘要:

我们考虑一个模型,描述一个自旋场效应晶体管的基础上的量子纳米线与一个可调的自旋-轨道相互作用嵌入两个铁磁导线与反共线磁化。我们调查了一个政权的共振近藤散射和干扰之间的强烈相互作用与Aharonov-Casher效应。在弱耦合区,我们用Keldysh方法微扰地计算了电荷流。据预测,对于引线的任何自旋极化(包括完全极化的反共线接触的情况),自旋-轨道相互作用的影响都会导致电流不消失。我们分析了Aharonov-Casher相位和自旋极化度对近藤温度的影响。

英文摘要:

We consider a model describing a spin field-effect transistor based on a quantum nanowire with a tunable spin-orbit interaction embedded between two ferromagnetic leads with anticollinear magnetization. We investigate a regime of a strong interplay between resonance Kondo scattering and interference associated with the Aharonov-Casher effect. Using the Keldysh technique at weak coupling regime we calculate perturbatively the charge current. It is predicted that the effects of the spin-orbit interaction result in a non-vanishing current for any spin polarization of the leads including the case of fully polarized anti-collinear contacts. We analyze the influence of the Aharonov-Casher phase and degree of spin polarization in the leads onto a Kondo temperature.

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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