Noble metal surface states:: deviations from parabolic dispersion

SURFACE SCIENCE

卷:447

Letter

Bürgi, L ; Petersen, L ; Brune, H ; Kern, K

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.);   

DOI  :  10.1016/S0039-6028(99)01102-4

来源: Elsevier

【 摘 要 】

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.

【 授权许可】

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