Volume 68, Number 2, October 2004
|Page(s)||254 - 260|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 October 2004|
Quasi–one-dimensional electronic state of alkali metal chains assembled on the surface
INFM, Dipartimento di Fisica, Università di Modena e Reggio Emilia via G. Campi 213/A, I-41100 Modena, Italy
2 INFM National Center on nanoStructures and bioSystems at Surfaces () via G. Campi 213/A, I-41100 Modena, Italy
3 INFM, Dipartimento di Fisica, Università di Roma “La Sapienza” Piazzale Aldo Moro 2, I-00185 Roma, Italy
4 INFM, Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore via dei Musei 41, I-25121 Brescia, Italy
Corresponding author: email@example.com
Accepted: 25 August 2004
We investigate the electronic band dispersion associated to alkali metal chains assembled on the surface by angular-resolved photoelectron spectroscopy. The and atomic chains induce occupied electronic states with twofold symmetry and narrow bandwidth along the chain direction, showing a quasi–one-dimensional electronic character. The insulating character and the narrow bandwidth of the alkali-induced state suggest the relevance of electron correlation effects in the description of alkali-induced electronic-state dispersion.
PACS: 73.20.-r – Electron states at surfaces and interfaces / 73.20.At – Surface states, band structure, electron density of states / 79.60.-i – Photoemission and photoelectron spectra
© EDP Sciences, 2004
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