Improving the effective-medium approach enhances density of states calculations in antiferromagnetic semiconductors, indicating broader applicability.
Improving the effective-medium approach for the s-f model in antiferromagnetic semiconductors, we calculate the density of states using the corrected Green function in the 2x2 sublattice Bloch function representation. The present results with classical spin at T = 0 and T 〓 TN agree with that obtained by Takahashi (1997). The present approach is expected to be applicable for a wide range of exchange interaction strength and temperature; Further, the quantum effect in the band of antiferromagnetic semiconductors is discussed.
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Masao Takahashi (2000) studied this question.
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