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Stability and dynamics of free magnetic polarons

M. J. Calderon·L. Brey·P. B. Littlewood
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Abstract

The stability and dynamics of a free magnetic polaron are studied by Monte Carlo simulation of a classical two-dimensional Heisenberg model coupled to a single electron. We compare our results to the earlier mean-field analysis of the stability of the polaron, finding qualitative similarity but quantitative differences. The dynamical simulations give estimates of the temperature dependence of the polaron diffusion, as well as a crossover to a tunnelling regime.

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M. J. Calderon, L. Brey, P. B. Littlewood. 1999-11-08. Stability and dynamics of free magnetic polarons. https://doi.org/10.1103/physrevb.62.3368

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