Ising Dynamics with Damping

Details Ising Dynamics with Damping Ising Dynamics with Damping

2007-08-28

arxiv.org/abs/0708.3855v1

Physics

Condensed Matter

Materials Science

8 pages, 8 figures, 2 column

Scientific paper

We show for the Ising model that is possible construct a discrete time stochastic model analogous to the Langevin equation that incorporates an arbitrary amount of damping. It is shown to give the correct equilibrium statistics and is then used to investigate nonequilibrium phenomena, in particular, magnetic avalanches. The value of damping can greatly alter the shape of hysteresis loops, and for small damping and high disorder, the morphology of large avalanches can be drastically effected. Small damping also alters the size distribution of avalanches at criticality.

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