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Updated: Jan 15, 2026

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Published on: August 2, 2019
Quasi-one-dimensional quantized states in an epitaxial Ag film on a one-dimensional surface superstructure
Naoka Nagamura1, Iwao Matsuda, Nobuhiro Miyata
1Department of Physics, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Abstract:
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.
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