Friday, July 27, 2012

1207.6245 (Suman Sinha et al.)

Dynamical Properties of Random Field Ising Model    [PDF]

Suman Sinha, Pradipta Kumar Mandal
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.
View original: http://arxiv.org/abs/1207.6245

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