论文标题
具有超导纳米结构的Weyl点的旋转三位型
Spintronics with a Weyl point in superconducting nanostructures
论文作者
论文摘要
我们研究了在安德里弗（Andreev）结合状态的范围内的超导纳米结构壳体中的运输。在该点附近实现了最小磁体状态。一个或多个正常的金属导线耦合到纳米结构。我们已经表明，这种最低磁性设置适合实现旋转的所有常见目标：检测磁态，将电流转换为自旋电流，可能达到每次转移的一个自旋的绝对极限，检测铅中的自旋积累。设置的特殊性和可能的优势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：超导相位差异。我们采用此特性来证明不常见的自旋效应的可行性：旋转需求和替代自旋电流。
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.
