Positron surface states on clean and oxidized Al and in surface vacancies
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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4
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Physical Review Letters, Volume 50, issue 4, pp. 281-284
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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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