Abstract:
Monte Carlo simulations of the short-time dynamic behavior are reported for three-dimensional Heisenberg model with long-range correlated disorder at criticality, in the case corresponding to linear defects. Former was carried out both from high-temperature and low-temperature initial states. The static and dynamic critical exponents are determined for systems starting from different initial state. The obtained values of the exponents demonstrated a strong influence of long-range correlated quenched defects on the critical behavior of the systems described by the many-component order parameter.
Keywords:Monte Carlo methods, disordered systems, short-time dynamic, Heisenberg model, disorder with long-range correlation.
UDC:
538.9
Received: 05.12.2016 Received in revised form: 14.12.2017 Accepted: 20.06.2018