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Microscopic analysis of the valence band and impurity band theories of (Ga,Mn)As

Gallagher, with Jungwirth, initiated a collaborative theoretical study to interpret experimental results acquired by Gallagher’s group over the past decade. The theoretical results ruled out an impurity model of ferromagnetism in (GaMn)As alloys in favour of a valence band picture. Jungwirth, Maca and Gallagher wrote the first draft of the paper. Gallagher was principal investigator on grants funding the work, which was performed as part of an ongoing collaboration between the Nottingham spintronics group and the Prague group.