Spintronics with a Weyl point in superconducting nanostructures
arXiv:2012.13007 · doi:10.1103/PhysRevB.103.165424
Abstract
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.
arXiv comment9 pages, 6 figures
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Cited by in corpus (4)
- Weyl point immersed in a continuous spectrum: an example from superconducting nanostructures
- Exploring the energy spectrum of a four-terminal Josephson junction: Towards topological Andreev band structures
- A novel device for controlling the flow of information based on Weyl fermions and some interesting remarks regarding the electromagnetic interactions of high energy particles
- Drastic effect of weak interaction near special points in semiclassical multiterminal superconducting nanostructures