Transition from Ferromagnetism to Antiferromagnetism in Ga$_{1-x}$Mn$_x$N

Details Transition from Ferromagnetism to Antiferromagnetism in Ga$_{1-x}$Mn$_x$N Transition from Ferromagnetism to Antiferromagnetism in Ga$_{1-x}$Mn$_x$N

2005-04-04

arxiv.org/abs/cond-mat/0504083v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

Using density functional theory, we study the magnetic stability of the Ga$_{1-x}$Mn$_x$N alloy system. We show that unlike Ga$_{1-x}$Mn$_x$As, which shows only ferromagnetic (FM) phase, Ga$_{1-x}$Mn$_x$N can be stable in either FM or antiferromagnetic phases depending on the alloy concentration. The magnetic order can also be altered by applying pressure or with charge compensation. A unified model is used to explain these behaviors.

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