Hysteresis in random-field XY and Heisenberg models: mean-field theory and simulations at zero temperature.
نویسندگان
چکیده
We examine zero-temperature hysteresis in random-field XY and Heisenberg models in the zero-frequency limit of a cyclic driving field. Exact expressions for hysteresis loops are obtained in the mean-field approximation. These show rather unusual features. We also perform simulations of the two models on a simple-cubic lattice and compare them with the predictions of the mean-field theory.
منابع مشابه
Critical hysteresis in random-field XY and Heisenberg models.
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عنوان ژورنال:
- Physical review. E, Statistical, nonlinear, and soft matter physics
دوره 81 3 Pt 1 شماره
صفحات -
تاریخ انتشار 2010