Relaxation dynamics of disordered Ising model. Two-site cluster approximation
Abstract
Spin relaxation in a site-disordered Ising model within master equation approach is studied. The q,ω-dependent susceptibility of the model is calculated and investigated. Effects described by the two-site cluster approximation and lost by the mean field approximation are discussed. Comparison of obtained results with dielectric measurements in Cs(H1-xDx)2PO4 is presented.
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