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Magnons and solitons in CsNiF3 investigated by nuclear spin-lattice relaxation

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Zeitschrift für Physik B Condensed Matter

Abstract

By nuclear spin-lattice relaxation of133Cs we studied linear and nonlinear magnetic excitations in the one-dimensional easy-plane ferromagnet CsNiF3. The measurements were performed in the temperature range from 3 to 20 K and with external magnetic fields from 3 to 55 kOe applied perpendicular to the chain direction. Universal dependence on\(\sqrt H /T\) was obtained forT/T 1. A quantitative interpretation of theT 1 data in terms of two-magnon and soliton contributions could be achieved by considering renormalization effects resulting from magnon-magnon and soliton-magnon interaction as well as from quantum corrections. The instability of solitons due to out-of-plane fluctuations expected in high magnetic fields is discussed.

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Authors and Affiliations

  1. Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstrasse 2, D-6100, Darmstadt, Federal Republic of Germany

    H. Seitz & H. Benner

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  1. H. Seitz
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  2. H. Benner
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Seitz, H., Benner, H. Magnons and solitons in CsNiF3 investigated by nuclear spin-lattice relaxation. Z. Physik B - Condensed Matter 66, 485–494 (1987). https://doi.org/10.1007/BF01303898

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