Surface quantum well state at the striped Cu(1 1 0)(2 × 1)O surface studied by angle resolved photoemission spectroscopy

We have performed an angle resolved photoemission spectroscopy with high energy and high momentum resolutions and have observed the k dependent energy dispersion curves of the striped Cu(1 1 0)(2 × 1)O surface. It is found that the Shockley surface state electron is confined in the clean surface alo...

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Bibliographic Details
Published in:Surface science 2007-09, Vol.601 (18), p.4041-4044
Main Authors: Nagira, M., Sawada, M., Higashiguchi, M., Yaji, K., Moko, T., Ueno, T., Miura, U., Shimada, K., Kimura, A., Namatame, H., Taniguchi, M.
Format: Article
Language:English
Subjects:
Angle resolved photoemission spectroscopy
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Physics
Quantum confinement state
Shockley surface state
Striped Cu(2 × 1)O surface
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Summary:We have performed an angle resolved photoemission spectroscopy with high energy and high momentum resolutions and have observed the k dependent energy dispersion curves of the striped Cu(1 1 0)(2 × 1)O surface. It is found that the Shockley surface state electron is confined in the clean surface along the perpendicular direction to the stripes and forms a quantum well state (QWS). It has also been clearly observed that an electron of Cu–O antibonding state is confined within the oxygen covered surface.
ISSN:0039-6028
1879-2758
DOI:10.1016/j.susc.2007.04.176