Journal
PHYSICAL REVIEW LETTERS
Volume 111, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.097201
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Funding
- U.S. Department of Energy [DE-AC02-05CH11231]
- DFG [FOR 1346, SFB 689, EB 154/23, 18]
- German ministry BMBF [05K10WMA]
- Austrian Science Fund (FWF) [I597-N16]
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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, for both low (1%) and high (13%) Mn doping values, 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.
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