R. N. Bhatt, Xin Wan
Published 1999-12-21Version 1
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.
Comments: 12 pages, latex, 7 figures; submitted to International Journal of Modern Physics C, Proceedings of the U.S.-Japan Bilateral Seminar: Understanding and Conquering Long Time Scales in Computer Simulations
Journal: Int. J. Mod. Phys. C 10, 1459 (1999)
Comment on "Effects of Disorder on Ferromagnetism in Diluted Magnetic Semiconductors"
Unraveling the nature of carrier mediated ferromagnetism in diluted magnetic semiconductors
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