We investigate the electronic band dispersion associated to alkali metal chains assembled on the InAs(110) surface by angular-resolved photoelectron spectroscopy. The Cs and K 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.
Corradini, V., Betti, M. G., Mariani, C., Spiller, E., Gavioli, L., Quasi one-dimensional electronic states of alkali metal chains assembled on the InAs(110) surface, <<EUROPHYSICS LETTERS>>, 2004; 2004 (254): 254-260. [doi:10.1209/epl/i2004-10196-3] [http://hdl.handle.net/10807/18690]
Quasi one-dimensional electronic states of alkali metal chains assembled on the InAs(110) surface
Betti, Maria Grazia;Spiller, Enrica;Gavioli, Luca
2004
Abstract
We investigate the electronic band dispersion associated to alkali metal chains assembled on the InAs(110) surface by angular-resolved photoelectron spectroscopy. The Cs and K 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.
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