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Phonon eigenvectors in Si determined by inelastic neutron scattering

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Zeitschrift für Physik B Condensed Matter

Abstract

We have determined the eigenvectors of longitudinal phonons with wavevectors in the Λ direction in Si at 12 K from inelastic neutron scattering intensities. The eigenvectors obtained from different model and quantum-mechanical calculations are at variance. Comparison of experimental and theoretical results shows that of the various theoretical predictions the ones from the bond-charge model are in best agreement with experiment. Internal-strain constants from these models and from experiment are compared.

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Authors and Affiliations

  1. Theoretische Physik, Universität Regensburg, D-8400, Regensburg, Federal Republic of Germany

    D. Strauch

  2. Theoretische Physik II, Universität Münster, D-4400, Münster, Federal Republic of Germany

    A. P. Mayer

  3. Institut Laue-Langevin, F-38042, Grenoble, France

    B. Dorner

Authors
  1. D. Strauch
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  2. A. P. Mayer
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  3. B. Dorner
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Strauch, D., Mayer, A.P. & Dorner, B. Phonon eigenvectors in Si determined by inelastic neutron scattering. Z. Physik B - Condensed Matter 78, 405–410 (1990). https://doi.org/10.1007/BF01313321

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  • DOI: https://doi.org/10.1007/BF01313321

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