Positron Surface States on Clean and Oxidized Al and in Surface Vacancies
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© 1983 American Physical Society (APS). This is the accepted version of the following article: Nieminen, Risto M. & Puska, M. J. 1983. Positron Surface States on Clean and Oxidized Al and in Surface Vacancies. Physical Review Letters. Volume 50, Issue 4. 281-284. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.50.281, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.50.281.
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School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Authors
Date
1983
Major/Subject
Mcode
Degree programme
Language
en
Pages
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
Keywords
aluminium, surfaces, positrons
Other note
Citation
Nieminen, Risto M. & Puska, M. J. 1983. Positron Surface States on Clean and Oxidized Al and in Surface Vacancies. Physical Review Letters. Volume 50, Issue 4. 281-284. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.50.281.