Fractional band filling in an atomic chain structure.

Crain, J N; Kirakosian, A; Altmann, K N; Bromberger, C; Erwin, S C; McChesney, J L; Lin, J-L; Himpsel, F J

Crain, J N; Kirakosian, A; Altmann, K N; Bromberger, C; Erwin, S C; McChesney, J L; Lin, J-L; Himpsel, F J.

Afiliación

Crain JN; Department of Physics, UW-Madison, 1150 University Avenue, Madison, Wisconsin 53706, USA.

Phys Rev Lett ; 90(17): 176805, 2003 May 02.

Article en En | MEDLINE | ID: mdl-12786093

RESUMEN

A new chain structure of Au is found on stepped Si(111) which exhibits a 1/4-filled band and a pair of > or =1/2-filled bands with a combined filling of 4/3. Band dispersions and Fermi surfaces for Si(553)-Au are obtained by photoemission and compared to that of Si(557)-Au. The dimensionality of both systems is determined using a tight binding fit. The fractional band filling makes it possible to preserve metallicity in the presence of strong correlations.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2003 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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