Switching between different vortex states in 2-dimensional easy-plane magnets due to an ac magnetic field
arXiv:cond-mat/9903432 · doi:10.1103/PhysRevB.61.9449
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.
4 pages, 4 figures, submitted to Phys. Rev. Lett