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Coupled pairs of quantum rotors in (CH3)2SnCl2: An inelastic neutron scattering study

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Zeitschrift für Physik B Condensed Matter

Abstract

Rotational tunnelling and librations of the methyl groups in (CH3)2SnCl2 measured by inelastic neutron scattering are explained on the basic of coupled pairs of CH3 groups. The self and the interaction part of the rotational potential are determined to be (V 3,W 3)=(17.5 meV, 10.9 meV). Thus, in agreement with our expectation from the crystallographic structure, the frustrated coupling is realized in (CH3)2SnCl2 where the interactionW 3 counteracts the single particle potentialV 3.

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Authors and Affiliations

  1. Institut für Festkörperforschung, Kernforschungsanlage Jülich GmbH, Postfach 1913, D-5170, Jülich 1, Federal Republic of Germany

    M. Prager

  2. Institut Max von Laue-Paul Langevin 156 X, F-38042, Grenoble Cedex, France

    A. Heidemann

  3. Institut für Theoretische Physik der Universität Erlangen, Glückstrasse 6, D-8520, Erlangen, Federal Republic of Germany

    W. Häusler

Authors
  1. M. Prager
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  2. A. Heidemann
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  3. W. Häusler
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Prager, M., Heidemann, A. & Häusler, W. Coupled pairs of quantum rotors in (CH3)2SnCl2: An inelastic neutron scattering study. Z. Physik B - Condensed Matter 64, 447–452 (1986). https://doi.org/10.1007/BF01312838

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  • DOI: https://doi.org/10.1007/BF01312838

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