Optical Orientation in Ferromagnet/Semiconductor Hybrids

TL;DR

This paper explores how optical pumping can be used to read and control ferromagnetism in hybrid structures with semiconductors, emphasizing the role of spin interactions at the interface.

Contribution

It introduces a detailed discussion of optical orientation mechanisms in ferromagnet/semiconductor hybrids and highlights the potential for optical control of ferromagnetic properties.

Findings

Optically oriented electrons can detect ferromagnetic states.

Spin interactions at the interface are crucial for optical readout.

Optical manipulation of ferromagnetism is feasible in these hybrids.

Abstract

The physics of optical pumping of semiconductor electrons in the ferromagnet/semiconductor hybrids is discussed. Optically oriented semiconductor electrons detect the magnetic state of the ferromagnetic film. In turn, the ferromagnetism of the hybrid can be controlled optically with the help of the semiconductor. Spin-spin interactions near the interface ferromagnet/semiconductor play crucial role in the optical readout and the manipulation of ferromagnetism.