Nonequilibrium critical dynamics at surfaces: cluster dissolution and nonalgebraic correlations |
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Authors: | Pleimling Michel Iglói Ferenc |
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Institution: | Institut für Theoretische Physik I, Universit?t Erlangen-Nürnberg, D-91058 Erlangen, Germany. |
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Abstract: | We study nonequilibrium dynamical properties at a free surface after the system is quenched from the high-temperature phase into the critical point. We show that if the spatial surface correlations decay sufficiently rapidly the surface magnetization and/or the surface manifold autocorrelations have a qualitatively different universal short time behavior than the same quantities in the bulk. At a free surface cluster dissolution may take place instead of domain growth, yielding stationary dynamical correlations that decay in a stretched exponential form. This phenomenon takes place in the three-dimensional Ising model and should be observable in real ferromagnets. |
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