Dynamical Properties of Random Field Ising Model

Abstract

Extensive Monte Carlo simulations are performed on a two-dimensional random field Ising model. The purpose of the present work is to study the disorder-induced changes in the properties of disordered spin systems. The time evolution of the domain growth, the order parameter and spin-spin correlation functions are studied in the non equilibrium regime. The dynamical evolution of the order parameter and the domain growth shows a power law scaling with disorder-dependent exponents. It is observed that, except for very small random fields, exchange interaction never wins over pinning interaction to establish long range order.

8 pages, 9 figures, Final and accepted version in Phys. Rev. E

References in corpus (11)

• Theory of Phase Ordering Kinetics
• Supersymmetry and its spontaneous breaking in the random field Ising model
• Crossover in Growth Law and Violation of Superuniversality in the Random Field Ising Model
• Ground states and thermal states of the random field Ising model
• Susceptibility and Percolation in 2D Random Field Ising Magnets
• Finite size scaling in Ising-like systems with quenched random fields: Evidence of hyperscaling violation
• Numerical signs for a transition in the 2d Random Field Ising Model at T=0
• Super-Aging in two-dimensional random ferromagnets
• Short-time domain-wall dynamics in the random-field Ising model with a driving field
• Phase transitions in a disordered system in and out of equilibrium
• Geometrical clusters in two-dimensional random-field Ising models

Cited by in corpus (12)

• Coarsening in inhomogeneous systems
• Critical behaviour in two-dimensional Coulomb Glass at zero temperature
• Characterization of kinetic coarsening in a random-field Ising model
• Aging in the three-dimensional Random Field Ising Model
• Effect of increasing disorder on domains of the two-dimensional Coulomb glass
• Thermal vestiges of avalanches in the driven random field Ising model
• Equilibrium structure and off-equilibrium kinetics of a magnet with tunable frustration
• Heterogeneous nucleation in the random field Ising model
• First Order Transition in Two Dimensional Coulomb Glass
• Quasi-one-dimensional Ising models with defects of the "random local field" type: Imry-Ma phase in spaces with dimension higher than the lower critical one
• Rejection-free Glauber Monte Carlo for the 2D Random Field Ising Model via Hierarchical Probabilistic Counters
• Domain dynamics in nonequilibrium random-field Ising models