Dynamics of bond-diluted Ising magnets

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We study the relaxational dynamics of the dilute Ising model in 2, 3 and 4D and compare the behaviour at the bond percolation threshold with that for the fully connected system. In the paramagnetic phase we find that the time dependent spin autocorrelation function, C(t) obeys a stretched exponential relaxation law: C(t) = exp(-Atn), with temperature dependent exponents n(T). The temperature dependence is found to vary systematically with spatial dimension d. We have investigated very large lattice systems of more than 107 spins for Monte-Carlo times of up to 512 steps/spin, following thermal equilibration. © 1992.
Original languageEnglish
Pages (from-to)423-424
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Issue numberPART 1
Publication statusPublished - Feb 1992



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