Magneto-transport and magneto-optical properties of ferromagnetic (III,Mn)V semicondcutors: a review

TL;DR

This review summarizes recent advances in understanding the magneto-transport and magneto-optical properties of ferromagnetic (III,Mn)V semiconductors, emphasizing the effective Hamiltonian approach in describing their bulk properties.

Contribution

It provides a comprehensive overview of experimental and theoretical progress, highlighting the effectiveness of the effective Hamiltonian model for these complex materials.

Findings

Effective Hamiltonian approach successfully describes magneto-transport properties.

Ferromagnetic coupling mediated by holes in the valence band.

Insights into bulk properties within the metallic regime.

Abstract

Rapid developments in material research of metallic ferromagnetic (III,Mn)V semiconductors over the past few years have brought a much better understanding of these complex materials. We review here some of the main developments and current understanding of the bulk properties of these systems within the metallic regime, focusing principally on the magneto-transport and magneto-optical properties. Although several theoretical approaches are reviewed, the bulk of the review uses the effective Hamiltonian approach, which has proven useful in describing many of these properties namely in (Ga,Mn)As and (In,Mn)As. The model assumes a ferromagnetic coupling between Mn d-shell local moments mediated by holes in the semiconductor valence band.