Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1999-12-21
Int. J. Mod. Phys. C 10, 1459 (1999)
Physics
Condensed Matter
Disordered Systems and Neural Networks
12 pages, latex, 7 figures; submitted to International Journal of Modern Physics C, Proceedings of the U.S.-Japan Bilateral Se
Scientific paper
We describe a Monte Carlo simulation study of the magnetic phase diagram of diluted magnetic semiconductors doped with shallow impurities in the low concentration regime. We show that because of a wide distribution of interaction strengths, the system exhibits strong quantum effects in the magnetically ordered phase. A discrete spin model, found to closely approximate the quantum system, shows long relaxation times, and the need for specialized cluster algorithms for updating spin configurations. Results for a representative system are presented.
Bhatt R. N.
Wan Xin
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