Noble metal surface states: deviations from parabolic dispersion

Authors
Burgi, L Petersen, L Brune, H Kern, K
Citation
L. Burgi et al., Noble metal surface states: deviations from parabolic dispersion, SURF SCI, 447(1-3), 2000, pp. L157-L161
Citations number
28
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
SURFACE SCIENCE
ISSN journal
00396028 → ACNP
Volume
447
Issue
1-3
Year of publication
2000
Pages
L157 - L161
Database
ISI
SICI code
0039-6028(20000220)447:1-3<L157:NMSSDF>2.0.ZU;2-3
Abstract
Dispersion relations of the s-p derived surface state on (111) surfaces of silver and copper have been measured using low-temperature scanning tunneli ng microscopy and spectroscopy. For silver as well as for copper we find a significant deviation from a parabolic dispersion characteristic of free-el ectron-like systems. A simple tight-binding model accounts for the trends i n the measured dispersions. (C) 2000 Elsevier Science B.V. All rights reser ved.