Issue |
Europhys. Lett.
Volume 68, Number 2, October 2004
|
|
---|---|---|
Page(s) | 254 - 260 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2004-10196-3 | |
Published online | 01 October 2004 |
Quasi–one-dimensional electronic state of alkali metal
chains assembled on the
surface
1
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: valdis@unimo.it
Received:
16
April
2004
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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