Quasi-one-dimensional quantized states in an epitaxial Ag film on a one-dimensional surface superstructure

The in-plane energy dispersion of quantized states in an ultrathin Ag film formed on the one-dimensional (1D) surface superstructure Si(111)-(4 x 1)-In shows clear 1D anisotropy instead of the isotropic two-dimensional free-electron-like behavior expected for an isolated metal film. The present phot...

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Bibliographic Details
Published in:Physical review letters 2006-06, Vol.96 (25), p.256801-256801
Main Authors: Nagamura, Naoka, Matsuda, Iwao, Miyata, Nobuhiro, Hirahara, Toru, Hasegawa, Shuji, Uchihashi, Takashi
Format: Article
Language:English
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Summary:The in-plane energy dispersion of quantized states in an ultrathin Ag film formed on the one-dimensional (1D) surface superstructure Si(111)-(4 x 1)-In shows clear 1D anisotropy instead of the isotropic two-dimensional free-electron-like behavior expected for an isolated metal film. The present photoemission results demonstrate that an atomic layer at the film-substrate interface can regulate the dimensionality of electron motion in quantum films.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.96.256801