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Photovoltaic effect generated by spin-orbit interactions

Journal article
Authors O. Entin-Wohlman
Robert I. Shekhter
Mats Jonson
A. Aharony
Published in Physical Review B
Volume 101
Issue 12
Pages 6
ISSN 2469-9950
Publication year 2020
Published at Department of Physics (GU)
Pages 6
Language en
Links dx.doi.org/10.1103/PhysRevB.101.121...
Keywords Materials Science, Physics
Subject categories Physical Sciences

Abstract

An AC electric field applied to a junction comprising two spin-orbit coupled weak links connecting a quantum dot to two electronic terminals is proposed to induce a DC current and to generate a voltage drop over the junction if it is a part of an open circuit. This photovoltaic effect requires a junction in which mirror reflection symmetry is broken. Its origin lies in the different ways inelastic processes modify the reflection of electrons from the junction back into the two terminals, which leads to uncompensated DC transport. The effect can be detected by measuring the voltage drop that is built up due to that DC current. This voltage is an even function of the frequency of the AC electric field.

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