Anomalous and Spin Hall Effects in a Magnetic Tunnel Junction with Rashba Spin-Orbit Coupling

TL;DR

This paper theoretically investigates how Rashba spin-orbit coupling in a magnetic tunnel junction influences anomalous and spin Hall effects, revealing controllable charge and spin Hall currents near interfaces.

Contribution

It introduces a theoretical model for Hall effects in magnetic tunnel junctions with Rashba coupling, highlighting the control of Hall currents via magnetization orientation.

Findings

Charge and spin Hall currents are localized near interfaces.

Hall currents depend on the magnetic configuration of the junction.

Magnetization rotation enables manipulation of Hall currents.

Abstract

Anomalous and spin Hall effects are investigated theoretically for a magnetic tunnel junction where the applied voltage produces a Rashba spin-or bit coupling within the tunneling barrier layer. The ferromagnetic electrodes are the source of the spin-polarized current. The tunneling electrons experience a spin-orbit coupling inside the barrier due to the applied electrical field. Charge and spin Hall currents are calculated as functions of the position inside the barrier and the angle between the magnetizations of the electrodes. We find that both charge and spin Hall currents are located inside the barrier near the in terfaces. The dependence of the currents on magnetic configuration of the magnetic tunnel junction makes possible the manipulation by the Hall currents via rotation of the magnetization of the electrodes.