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Dynamical Heterogeneities in the Ising Spin Glass



S C. Glotzer, N Jan, T Lookman, A B. MacIsaac, P H. Poole


We investigate the relationship between bulk and local relaxation in the Ising spin glass (in 2 and 3 dimensions) for temperatures above but approaching the glass transition temperature, using Monte Carlo computer simulations. We find that the stretched exponential form of the bulk spin autocorrelation function results from a spatial average over a broad range of behavior-from strongly non-exponential to nearly exponential-for the local autocorrelation functions. We find that the these sites are spatially correlated and correspond to clusters of unfrustrated sites.
Physical Review Letters


bulk and local relaxation, glass transition temperature, Ising spin glass


Glotzer, S. , Jan, N. , Lookman, T. , MacIsaac, A. and Poole, P. (2008), Dynamical Heterogeneities in the Ising Spin Glass, Physical Review Letters (Accessed June 22, 2024)


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Created October 16, 2008