This article is cited in 1 paper

XXVI International Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 14 - March 17, 2022
Magnetism

Photovoltaic effect in a ferromagnet with spin-orbit coupling

E. A. Karashtin<sup>ab

a</sup> Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, Russia
^b Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia

Abstract: The effect of the appearance of an electric current induced by the electromagnetic radiation at the interface of a ferromagnet and a non-magnetic material is calculated theoretically, taking into account the Rashba spin-orbit coupling. It is shown that the electric dipole transitions between the spin subbands of the conduction electrons of a ferromagnet due to the Rashba interaction lead to a photocurrent. This current has a resonance at a frequency corresponding to the energy of the exchange splitting of spin subbands. The resonance width is determined by the spin-orbit interaction constant. The estimates show the possibility of experimental observation of this effect in specially prepared multilayer systems.

Keywords: ferromagnet, exchange coupling, Rashba spin-orbit coupling, photovoltaic effect.

Received: 29.04.2022
Revised: 29.04.2022
Accepted: 12.05.2022

DOI: 10.21883/FTT.2022.09.52825.28HH

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