Order-Disorder Transition in 2D Conserved Spin System with Cooperative Dynamics
K. Hałagan and P. Polanowski
Department of Molecular Physics, Łódź University of Technology, S. Żeromskiego 116, 90-924 Łódź, Poland
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In this work Monte Carlo simulations with usage of dynamic lattice liquid model are presented, instead of the widely used direct exchange or vacancy dynamics, to investigate the dynamics of phase separation phenomenon in spin conserved system with all lattice sites occupied. The dynamic behaviour of domain growth and particle diffusion is discussed for the modified conserved order parameter Ising model. The dynamic lattice liquid model dynamics enables non-locally correlated relaxation dynamics and allows to simulate dense systems in absence of vacancies and parallel treatment of all spins. This approach involves cooperative movement of system elements enabling observation of the order-disorder phase transition in a system with highly correlated motions. Simulations were performed on 2D triangular lattice for several investigated temperatures. Presented results include temporal evolution of domain morphology and diffusion of system elements.

DOI: 10.12693/APhysPolA.127.585
PACS numbers: 64.60.De, 05.40.Jc, 64.60.Cn