Kinetic Ising system in an oscillating external field: Stochastic resonance and residence-time distributions

摘要: Experimental, analytical, and numerical results suggest that the mechanism by which a uniaxial single-domain ferromagnet switches after sudden field reversal depends on magnitude system size. Here we report new how these distinct decay mechanisms influence hysteresis in two-dimensional nearest-neighbor kinetic Ising model. We present theoretical predictions supported simulations for frequency dependence of probability distributions hysteresis-loop area period-averaged magnetization, residence-time distributions. The latter evidence stochastic resonance small systems moderately weak oscillating fields.