Switching between different vortex states in 2-dimensional easy-plane magnets due to an ac magnetic field
Yuri Gaididei, Till Kamppeter, Franz G. Mertens, A. R. Bishop
Abstract
Using a discrete model of 2-dimensional easy-plane classical ferromagnets, we propose that a rotating magnetic field in the easy plane can switch a vortex from one polarization to the opposite one if the amplitude exceeds a threshold value, but the backward process does not occur. Such switches are indeed observed in computer simulations.
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