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arXiv 2012.13007cond-mat.mes-hallcond-mat.supr-con
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超导纳米结构中具有Weyl点的自旋电子学

Spintronics with a Weyl point in superconducting nanostructures

Yuguang Chen, Yuli Nazarov

摘要:

我们调查运输超导纳米结构住房的外尔点的Andreev束缚态的光谱。在该点附近实现最小磁体状态。一个或多个普通金属引线隧道耦合到纳米结构。我们已经表明,这种最小的磁性设置是适合于实现所有共同的目标的自旋电子学:检测的磁性状态,电流到自旋电流的转换,潜在地达到一个自旋的绝对极限,每个电荷转移,检测自旋积累的铅。该装置的特点和可能的优点是能够通过控制参数的微小变化在磁性和非磁性状态之间切换:超导相位差。我们采用这种属性,以证明不太常见的自旋电子效应的可行性:按需自旋和替代自旋电流。

英文摘要:

We investigate transport in a superconducting nanostructure housing a Weyl point in the spectrum of Andreev bound states. A minimum magnet state is realized in the vicinity of the point. One or more normal-metal leads are tunnel-coupled to the nanostructure. We have shown that this minimum magnetic setup is suitable for realization of all common goals of spintronics: detection of a magnetic state, conversion of electric currents into spin currents, potentially reaching the absolute limit of one spin per charge transferred, detection of spin accumulation in the leads. The peculiarity and possible advantage of the setup is the ability to switch between magnetic and non-magnetic states by tiny changes of the control parameters: superconducting phase differences. We employ this property to demonstrate the feasibility of less common spintronic effects: spin on demand and alternative spin current.

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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