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On the dynamics of impure classical Heisenberg chains

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Zeitschrift für Physik B Condensed Matter

Abstract

We present theoretical results on dynamic correlation functions of impure, classical, one-dimensional Heisenberg magnets with both ferromagnetic and antiferromagnetic coupling. The results are obtained in the framework of Mori's theory and in an approximation which includes correctly all moments of the relaxation function to lowest order in impurity concentration and temperature and which preserves the rotational symmetry of the system even at zero temperature. Explicit results are given for lineshifts and linewidths of quasi-spinwaves and the behaviour of correlation functions in the hydrodynamic limit is discussed.

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Patzak, E., Mikeska, H.J. On the dynamics of impure classical Heisenberg chains. Z. Physik B - Condensed Matter 42, 317–322 (1981). https://doi.org/10.1007/BF01293197

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  • DOI: https://doi.org/10.1007/BF01293197

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