Dilute moment n-type ferromagnetic semiconductor Li(Zn,Mn)As

Details Dilute moment n-type ferromagnetic semiconductor Li(Zn,Mn)As Dilute moment n-type ferromagnetic semiconductor Li(Zn,Mn)As

2006-09-07

arxiv.org/abs/cond-mat/0609184v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

We propose to replace Ga in (Ga,Mn)As with Li and Zn as a route to high Curie temperature, carrier mediated ferromagnetism in a dilute moment n-type semiconductor. Superior material characteristics, rendering Li(Zn,Mn)As a realistic candidate for such a system, include unlimited solubility of the isovalent substitutional Mn impurity and carrier concentration controlled independently of Mn doping by adjusting Li-(Zn,Mn) stoichiometry. Our predictions are anchored by detail ab initio calculations and comparisons with the familiar and directly related (Ga,Mn)As, by the microscopic physical picture we provide for the exchange interaction between Mn local moments and electrons in the conduction band, and by analysis of prospects for the controlled growth of Li(Zn,Mn)As materials.

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