Positron surface states on clean and oxidized Al and in surface vacancies
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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Author
Date
1983-01-24
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Mcode
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Language
en
Pages
4
281-284
281-284
Series
Physical Review Letters, Volume 50, issue 4
Abstract
This Letter reports on the first discrete-lattice calculation of positron surface states on the surfaces of Al. The authors reproduce the observed values and anisotropy of the binding energies on clean surfaces, and predict the surface-state lifetimes. The temperature-independent lateral diffusion constant is calculated. Monovacancies on surfaces are predicted not to trap positrons. The effect of ordered chemisorbed monolayers of oxygen is investigated: Oxidation makes the surface state unstable with respect to positronium emission.Description
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Citation
Nieminen , R M & Puska , M J 1983 , ' Positron surface states on clean and oxidized Al and in surface vacancies ' , Physical Review Letters , vol. 50 , no. 4 , pp. 281-284 . https://doi.org/10.1103/PhysRevLett.50.281
