Magnetic properties of nanosized diluted magnetic semiconductors with band splitting

TL;DR

This paper models nonuniform magnetism in nanosized diluted magnetic semiconductors, considering carrier spin polarization effects and solving nonlinear equations to understand spatial and temperature-dependent magnetic properties.

Contribution

It introduces a continual model that accounts for finite carrier spin polarization and spatial variations in magnetization in thin films and wires of diluted magnetic semiconductors.

Findings

Spatial distributions of magnetization and carrier concentrations are characterized.

Temperature dependence of average magnetization is determined.

The model captures nonuniform magnetic behavior in nanoscale structures.

Abstract

The continual model of the nonuniform magnetism in thin films and wires of a diluted magnetic semiconductor is considered with taking into account the finite spin polarization of carriers responsible for the indirect interaction of magnetic impurities (e.g. via RKKY mechanism). Spatial distributions (across the film thickness or the wire radius) of the magnetizaton and carrier concentrations of different spin orientations, as well as the temperature dependence of the average magnetization are determined as the solution of the nonlinear integral equation.