The Nature of the magnetism-promoting hole state in the prototype magnetic semiconductor GaAs: Mn
classification
❄️ cond-mat.mes-hall
cond-mat.mtrl-scicond-mat.str-el
keywords
bandgaasimpurityapproachcarrierscruciald-leveldetermined
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Recent experiments [1] suggest that the ferromagnetism (FM) in GaAs: Mn is determined by the impurity band rather than holes in the valence band. We discuss here the physical mechanism of FM mediated by the carriers in impurity band, where the Mn d-level play a crucial role. The theory is based on the first principle approach.
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