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Electron-induced stabilization of ferromagnetism in GaGdN

Gustavo M. Dalpian·Su-Huai Wei
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Abstract

Using {\it ab initio} band structure calculations and symmetry arguments, we show that the magnetic property of Ga$_{1-x}$Gd$_x$N is drastically different from TM-doped GaN. The coupling between Gd atoms in the alloy is antiferromagnetic, but the ferromagnetic phase can be stabilized by introducing electrons. Furthermore, we propose a model that may explain the recently observed colossal magnetic moments in this system, based on the polarization of donor electrons.

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Gustavo M. Dalpian, Su-Huai Wei. 2005-07-11. Electron-induced stabilization of ferromagnetism in GaGdN. https://doi.org/10.1103/physrevb.72.115201

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