Identifying the electronic character and role of the Mn states in the valence band of (Ga,Mn)As

Abstract

We report high-resolution hard x-ray photoemission spectroscopy results on (Ga,Mn)As films as a function of Mn doping. Supported by theoretical calculations we identify, over the entire 1% to 13% Mn doping range, the electronic character of the states near the top of the valence band. Magnetization and temperature dependent core-level photoemission spectra reveal how the delocalized character of the Mn states enables the bulk ferromagnetic properties of (Ga,Mn)As.

prl submitted

References in corpus (3)

• Theory of ferromagnetic (III,Mn)V semiconductors
• Controlling Curie temperature in (Ga,Ms)As through location of the Fermi level within the impurity band
• Electronic entanglement in late transition metal oxides

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