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Calculation of nuclear spin-lattice relaxation rate due to two-magnon scattering in YBa2Cu3O6

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Abstract

YBa2Cu3O6 is known to be an antiferromagnetic insulator with high Neel temperature (TN≈400≈500 K). The nuclear spin-lattice relaxation rate 1/T1 due to two-magnon scattering is calculated, using values of ecchange integrals and anisotropy gap published in literature. We found approximately quadratic dependence of relaxation rate 1/T1 on temperature for temperatures above 100 K. The value of 1/T1, determined by low-energy magnons, is found to be inversely proportional to magnitude of gap in magnon spectrum.

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Authors and Affiliations

  1. Institute of Physics CSAV, Na Slovance 2, Praha S, Czechoslovakia

    P. Božek & P. Novák

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  1. P. Božek
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  2. P. Novák
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Božek, P., Novák, P. Calculation of nuclear spin-lattice relaxation rate due to two-magnon scattering in YBa2Cu3O6 . Hyperfine Interact 61, 1159–1162 (1990). https://doi.org/10.1007/BF02407595

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  • DOI: https://doi.org/10.1007/BF02407595

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