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The enhancement of ferromagnetism in uniaxially stressed diluted magnetic semiconductors

Yu. G. Semenov·V. A. Stephanovich
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Abstract

We predict a new mechanism of enhancement of ferromagnetic phase transition temperature $T_c$ in uniaxially stressed diluted magnetic semiconductors (DMS) of p-type. Our prediction is based on comparative studies of both Heisenberg (inherent to undistorted DMS with cubic lattice) and Ising (which can be applied to strongly enough stressed DMS) models in a random field approximation permitting to take into account the spatial inhomogeneity of spin-spin interaction. Our calculations of phase diagrams show that area of parameters for existence of DMS-ferromagnetism in Ising model is much larger than that in Heisenberg model.

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Yu. G. Semenov, V. A. Stephanovich. 2003-04-01. The enhancement of ferromagnetism in uniaxially stressed diluted magnetic semiconductors. https://doi.org/10.1103/physrevb.67.195203

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