Formation of dispersive hybrid bands at an organic-metal interface

An electronic band with quasi-one-dimensional dispersion is found at the interface between a monolayer of a charge-transfer complex (TTF-TCNQ) and a Au(111) surface. Combined local spectroscopy and numerical calculations show that the band results from a complex mixing of metal and molecular states....

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Bibliographic Details
Published in:Physical review letters 2008-04, Vol.100 (15), p.156805-156805, Article 156805
Main Authors: Gonzalez-Lakunza, N, Fernández-Torrente, I, Franke, K J, Lorente, N, Arnau, A, Pascual, J I
Format: Article
Language:English
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Summary:An electronic band with quasi-one-dimensional dispersion is found at the interface between a monolayer of a charge-transfer complex (TTF-TCNQ) and a Au(111) surface. Combined local spectroscopy and numerical calculations show that the band results from a complex mixing of metal and molecular states. The molecular layer folds the underlying metal states and mixes with them selectively, through the TTF component, giving rise to anisotropic hybrid bands. Our results suggest that, by tuning the components of such molecular layers, the dimensionality and dispersion of organic-metal interface states can be engineered.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.100.156805