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Neutron scattering from a substitutional mass defect

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Zeitschrift für Physik B Condensed Matter

Abstract

The dynamic structure factor is calculated for a low concentration of light mass scatterers substituted in a cubic crystal matrix. A new numerical method for the exact calculation is demonstrated. We derive a local density of states for the low momentum transfer limit, and derive the shifts and widths of the oscillator peaks in the high momentum transfer limit. We discuss the limitations of an approximation which decouples the defect from the lattice.

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Authors and Affiliations

  1. Science and Engineering Research Council, Rutherford Appleton Laboratory, Chilton, OX11 0QX, Didcot, Oxfordshire, UK

    R. D. Williams & S. W. Lovesey

Authors
  1. R. D. Williams
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  2. S. W. Lovesey
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Williams, R.D., Lovesey, S.W. Neutron scattering from a substitutional mass defect. Z. Physik B - Condensed Matter 62, 413–421 (1986). https://doi.org/10.1007/BF01303572

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  • DOI: https://doi.org/10.1007/BF01303572

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