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Electronic Structure of Perfect Chemisorbed Monolayers and of Disordered Surfaces
Author(s) -
Beckmann A.
Publication year - 1985
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221310133
Subject(s) - surface (topology) , crystal (programming language) , multiplicative function , condensed matter physics , transfer (computing) , basis (linear algebra) , monolayer , surface states , physics , density of states , simple (philosophy) , spectrum (functional analysis) , chemistry , molecular physics , materials science , mathematics , geometry , quantum mechanics , mathematical analysis , nanotechnology , philosophy , epistemology , parallel computing , computer science , programming language
On the basis of a simple tight‐binding model, the local spectrum of a semiinfinite crystal is discussed on the surface layer of which both the local energy levels and the transfer integrals are changed with respect to the bulk. The two cases of an ordered and a substitutionally disordered surface are considered. For the transfer integrals the multiplicative type of Shiba is generally presumed. It is shown that for considerable deviation of the surface transfer integrals from those of the bulk (i) the local density of states shows a quasi two‐dimensional behaviour, and (ii) surface state bands may split into two separate parts.