Surface quantum well state at the striped Cu(1 1 0)(2 × 1)O surface studied by angle resolved photoemission spectroscopy |
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| Authors: | M Nagira M Sawada K Yaji T Ueno K Shimada H Namatame |
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| Institution: | a Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
b Hiroshima Synchrotron Radiation Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan |
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| Abstract: | 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. |
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| Keywords: | Angle resolved photoemission spectroscopy Striped Cu(1 1 0)(2 × 1)O surface Shockley surface state Quantum confinement state |
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