Monte Carlo simulations of ferromagnetism in p-CdMnTe quantum wells
arXiv:cond-mat/0407356 · doi:10.1103/PhysRevLett.94.127201
Abstract
Monte Carlo simulations, in which the Schrodinger equation is solved at each Monte Carlo sweep, are employed to assess the influence of magnetization fluctuations,short-range antiferromagnetic interactions, disorder, magnetic polaron formation, and spin-Peierls instability on the carrier-mediated Ising ferromagnetism in two-dimensional electronic systems. The determined critical temperature and hysteresis are affected in a nontrivial way by the antiferromagnetic interactions. The findings explain striking experimental results for modulation-doped p-CdMnTe quantum wells.
4 pages, 4 figures, to be published in Physical Review Letters; replaced figure 4; revised text
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