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Persistent URL
http://purl.org/net/epubs/work/40433
Record Status
Checked
Record Id
40433
Title
Importance of non-local electron-positron correlations for positron annihilation characteristics in solids
Contributors
A Rubaszek
,
Z Szotek (CCLRC Daresbury Lab.)
,
WM Temmerman (CCLRC Daresbury Lab.)
Abstract
Several methods to describe the electron-positron (e-p) correlation effects are used in calculations of positron annihilation characteristics in solids. The weighted density approximation (WDA), giving rise to the non-local, state-selective e-p correlation functions, is applied to calculate positron annihilation rates and e-p momentum densities in a variety of metals and silicon. The WDA results are compared to the results of other methods such as the independent particle model, local density approximation, generalised gradient approximation, and also to experiments. The importance of non-locality and state-dependence of the e-p correlation functions is discussed.
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. 5 (2001): 564-566. Is in proceedings of: 12. international conference on positron annihilation (ICPA-12), Munich (Germany), 6-12 Aug 2000.
2001
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