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- W1629705849 abstract "We propose a new mechanism of indirect exchange interaction, which can be responsible for the ferromagnetic ordering in Mn-doped semiconductors (like GaMnAs) at low carrier concentration. The mechanism is based on the interplay of the hybridization of band states (conduction or valence) with localized impurity (donor or acceptor) states and the direct exchange interaction between localized spins and the band states. The indirect exchange coupling between two impurities occurs when the wavefunctions of the corresponding localized donor (acceptor) states overlap. This coupling is independent of the free carrier concentration and therefore may be responsible for ferromagnetic transition at low or vanishing carrier concentration." @default.
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- W1629705849 date "2002-03-06" @default.
- W1629705849 modified "2023-09-27" @default.
- W1629705849 title "A new mechanism of exchange interaction in ferromagnetic semiconductors" @default.
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