Curie Temperature of Diluted Magnetic Semiconductors: the Influence of the Antiferromagnetic Exchange Interaction

Hoang Anh Tuan; Vu Kim Thai; Le Duc Anh

doi:10.15625/0868-3166/22/2/187

Curie Temperature of Diluted Magnetic Semiconductors: the Influence of the Antiferromagnetic Exchange Interaction

Hoang Anh Tuan, Vu Kim Thai, Le Duc Anh

Author affiliations

Authors

Hoang Anh Tuan Institute of Physics, VAST
Vu Kim Thai Institute of Physics, VAST
Le Duc Anh Hanoi National University of Education

DOI:

https://doi.org/10.15625/0868-3166/22/2/187

Keywords:

CPA, diluted magnetic semicoductors, Curie temperature

Abstract

The coherent potential approximation and mean field approximation are used to calculate the free energy of the coupled carrier – localized spin system in III-V diluted magnetic semiconductors. Thus the magnetic transition temperature Tc can be determined and its dependence on important model parameters. We show that the strong antiferromagnetic superexchange interaction between nearest neighbour sites considerably reduces the Curie temperature.

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Published

26-07-2012

How to Cite

[1]

H. A. Tuan, V. K. Thai and L. D. Anh, Curie Temperature of Diluted Magnetic Semiconductors: the Influence of the Antiferromagnetic Exchange Interaction, Comm. Phys. 22 (2012) 141. DOI: https://doi.org/10.15625/0868-3166/22/2/187.

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Issue

Vol. 22 No. 2 (2012)

Section

Papers

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