Thermodynamics of carrier-mediated magnetism in semiconductors
Materials Science
2010-11-09 v1 Other Condensed Matter
Abstract
We propose a model of carrier-mediated ferromagnetism in semiconductors that accounts for the temperature dependence of the carriers. The model permits analysis of the thermodynamic stability of competing magnetic states, opening the door to the construction of magnetic phase diagrams. As an example we analyze the stability of a possible reentrant ferromagnetic semiconductor, in which increasing temperature leads to an increased carrier density, such that the enhanced exchange coupling between magnetic impurities results in the onset of ferromagnetism as temperature is raised.
Keywords
Cite
@article{arxiv.0705.4464,
title = {Thermodynamics of carrier-mediated magnetism in semiconductors},
author = {A. G. Petukhov and Igor Zutic and Steven C. Erwin},
journal= {arXiv preprint arXiv:0705.4464},
year = {2010}
}
Comments
4 pages, 3 figures