Optically Induced Spin Electromotive Force in a Ferromagnetic–Semiconductor Quantum Well Structure

Abstract

Hybrid structures combining ferromagnetic (FM) and semiconductor constituents have great potential for future applications in the field of spintronics. A systematic approach to study spin-dependent transport in the GaMnAs/GaAs/InGaAs quantum well (QW) hybrid structure with a few nanometer thick GaAs barrier is developed.It is demonstrated that a combination of spin electromotive force measurements and photololuminescence detection provides a powerful tool for studying the properties of such hybrid structures and allows to resolve the dynamic FM proximity effect on a nanometer scale. The method can be generalized on various systems including rapidly developing 2D van der Waals materials.