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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/40431
Record Status
Checked
Record Id
40431
Title
Effect of positron wave function on positron annihilation rates and electron-positron momentum densities in solids
Contributors
A Rubaszek
,
Z Szotek (CCLRC Daresbury Lab.)
,
WM Temmerman (CCLRC Daresbury Lab.)
Abstract
To interpret positron annihilation data in solids in terms of the electron momentum density and electron charge distribution, both the electron-positron interaction and positron wave function have to be considered explicitly. In the present work we discuss the effect of the shape of the positron wave function on the calculated positron annihilation rates in a variety of solids, for different types of electrons (core, s, p, d, f). We show that the form of the positron distribution in the Wigner-Seitz cell has a crucial effect on the resulting core electron contribution to the positron annihilation characteristics. The same is observed for the localised d and f electrons in transition metals Finally we study the influence of the positron wave function on the electron-positron momentum density in elemental Si.
Organisation
CCLRC
,
CSE
,
CSE-BTG
Keywords
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Language
English (EN)
Type
Details
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Year
Journal Article
Mater Sci Forum
363, no. 3 (2001): 603-605. Is in proceedings of: 12. International conference on positron annihilation (ICPA-12), Munich (Germany), 6-12 Aug 2000.
doi:10.4028/www.s….net/MSF.363-365.603
2001
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