期刊
SURFACE SCIENCE
卷 447, 期 1-3, 页码 L157-L161出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0039-6028(99)01102-4
关键词
copper; low index single crystal surfaces; quantum effects; scanning tunneling microscopy; scanning tunneling spectroscopies; silver; surface electronic phenomena (work function, surface potential, surface states, etc.)
Dispersion relations of the s-p derived surface state on (111) surfaces of silver and copper have been measured using low-temperature scanning tunneling microscopy and spectroscopy. For silver as well as for copper we find a significant deviation from a parabolic dispersion characteristic of free-electron-like systems. A simple tight-binding model accounts for the trends in the measured dispersions. (C) 2000 Elsevier Science B.V. All rights reserved.
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