Влияние диссипации на структуру квазисолитонных состояний при высокочастотном точечном воздействии на нелинейные магнитоупорядоченные среды

Abstract

The dynamics of one-dimensional magnetic system in external spatially localized high-frequency field was analyzed analytically (in the framework of perturbation theory and qualitative approach) and numerically. In the case of direct nonlinear resonance the relationships between local state amplitude and external field one were analyzed for different values of external field frequency and damping parameter. It is found that the field dependence is of hysteresis character and there appear "instability windows", where an additional nutation of magnetic moments occurs.