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2006 | 110 | 5 | 683-689
Article title

Influence of Atomic Sphere Radii on the Electron-Positron Momentum Density Calculated for SiC within the LMTO-ASA

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EN
Abstracts
EN
The atomic sphere approximation consists in replacing the Wigner-Seitz polyhedron, containing individual atom, by the sphere of the same volume. In the case of several not equivalent atoms per primitive cell, e.g. for SiC, the radii of atomic spheres, centred at different atoms, are not uniquely determined and should be judiciously chosen. In the present work one studies the effect of choice of atomic sphere radii on the resulting electron band structure and momentum density as well as the electron-positron momentum density. Calculations were performed for SiC within the linear muffin-tin orbital atomic sphere approximation method.
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EN
Contributors
author
  • Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
References
  • 1. For review and references see e.g. http://www.ioffe.rssi.ru/SVA/NSM/Semicond/SiC/bandstr.html
  • 2. For review and references see e.g. http://www.ioffe.ru/SVA/NSM/Semicond/Si/bandstr.html
  • 3. For review and references see e.g. http://www.ioffe.ru/SVA/NSM/Semicond/Diamond/bandstr.html
  • 4. For review see e.g. M.J. Puska, R.M. Nieminen, Rev. Mod. Phys., 66, 841, 1994; R.M. Nieminen, in: Positron Spectroscopy of Solids, Eds. A. Dupasquier, A.P. Mills, IOS Press, Amsterdam 1996, p. 443
  • 5. O.K. Andersen, Phys. Rev. B, 12, 3600, 1975; W.R.L. Lambrecht, O.K. Andersen, ibid., 34, 2439, 1986
  • 6. T. Jarlborg, A.K. Singh, Phys. Rev. B, 36, 4660, 1987
  • 7. P. Harthoorn, P.E. Mijnarends, J. Phys. F, 8, 1147, 1978
  • 8. P. Hohenberg, W. Kohn, Phys. Rev., 136, B964, 1964; W. Kohn, L.J. Sham, ibid., 140, A133, 1965
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv110n516kz
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