POSITRON ANNIHILATION IN SiC

N. Amrane ()
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N. Amrane: Physics Department, Faculty of Science, United Arab Emirates University, P. O. Box 17551 Al Ain, United Arab Emirates

International Journal of Modern Physics C (IJMPC), 2002, vol. 13, issue 07, 957-966

Abstract: Valence electron and positron charge densities in SiC are obtained from wave functions derived in a model pseudopotential bandstructure calculation. It is observed that the positron density is maximum in the open interstices and is excluded not only from the ion cores but also, to a considerable degree, from the valence bonds. Electron–positron momentum densities are calculated for the (001–110) plane. The results are used to analyze the positron effect in large gap semiconductors.

Keywords: Positron annihilation; pseudopotential; wave function; momentum density (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0129183102003711

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