The interaction between the magnetic dopants (Mn) and 2-dimensional hole gas (2DHG) in Mn {δ}-doped GaAs/Be-doped p-type AlGaAs heterostructures, where holes were supplied from the Be-doped AlGaAs to the Mn {δ}-doped GaAs, realized ferromagnetic ordering. The Curie temperature TC of the heterostructure prepared with suitable growth conditions was 172 K, highest among the TC values reported in III-V (InAs, GaAs) magnetic semiconductors.
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Ahsan et al. (2003) studied this question.
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