Ying Liu, Zhi-Ming Yu, Shengyuan A. Yang
Published 2017-06-12Version 1
An incoming electron is reflected back as a hole at a normal-metal-superconductor interface, a process known as Andreev reflection. We predict that there exists a universal transverse shift in this process due to the effect of spin-orbit coupling in the normal metal. Particularly, using both the scattering approach and the argument of angular momentum conservation, we demonstrate that the shifts are pronounced for lightly-doped Weyl semimetals, and are opposite for incoming electrons with different chirality, generating a chirality-dependent Hall effect for the reflected holes. The predicted shift is not limited to Weyl systems, but exists for a general three-dimensional spin-orbit- coupled metal interfaced with a superconductor.
Comments: 5 pages, 2 figures
Andreev reflection at the interface with an oxide in the quantum Hall regime
Quantum effects in graphitic materials: Colossal magnetoresistance, Andreev reflections, Little-Parks effect, ferromagnetism, and granular superconductivity
Andreev reflection through a quantum dot coupled with two ferromagnets and a superconductor
![QR code for arXiv:1706.03688 [cond-mat.mes-hall]](http://oss.arxitics.com/images/favicon.svg)