Monte Carlo Study of the Effect of Initial States and Structural Defects on Nonequilibrium Critical Behavior of the Three-Dimensional Ising Model

Journal Article · Fri Jun 15 04:00:00 EDT 2018 · Physics of the Solid State

DOI:https://doi.org/10.1134/S1063783418060306· OSTI ID:22770968

Prudnikov, P. V.; Malyarenko, P. N. ^[1]

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1. Dostoevsky Omsk State University (Russian Federation)

The effect of various initial magnetizations m{sub 0} and structural defects the nonequilibrium critical behavior of the three-dimensional Ising model is numerically studied. Based on an analysis of the time dependence of the magnetization and the two-time dependence of the autocorrelation function and dynamic susceptibility, the significant effect of initial states on relaxation magnetizations and aging effects characterized by anomalous relaxation inhibition and correlation in the system with increasing waiting time was revealed. The fluctuation–dissipation theorem violation was studied, and the values of the limit fluctuation–dissipation ratio (FDR) are calculated. It is shown that two universality subclasses can be distinguished in the nonequilibrium critical behavior of the three-dimensional Ising model with random initial magnetization m{sub 0} These subclasses correspond to the system evolution from the high-temperature (m{sub 0} = 0) and low-temperature (m{sub 0} = 1) initial states with limit FDRs characteristic of these states.

• OSTI ID: 22770968
• Journal Information: Physics of the Solid State, Journal Name: Physics of the Solid State Journal Issue: 6 Vol. 60; ISSN 1063-7834
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CORRELATIONS
CRYSTAL DEFECTS
DEFECTS
FLUCTUATIONS
INHIBITION
ISING MODEL
MAGNETIZATION
MONTE CARLO METHOD
RANDOMNESS
RELAXATION
THREE-DIMENSIONAL CALCULATIONS
TIME DEPENDENCE