Electron correlation effects at Sn/Si(1&
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F. Flores; J. Ortega; R. Pérez; A. Charrier; F. Thibaudau; J.-M. Debever; J.-M.
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Article
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2001
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Elsevier Science
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English
⚖ 150 KB
Electron correlation eects for the two-dimensional electron gas associated with the surface bands of the Sn/Si(1 1 1)±3  3, 3 p  3 p , Sn/Ge(1 1 1)±3  3 and 3 p  3 p reconstructions are analyzed. Unrestricted local-density-approximation (LDA) calculations enable to de®ne a many-body hamiltonian