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Phys. Rev. Lett. 90, 176805 (2003) [4 pages]

Fractional Band Filling in an Atomic Chain Structure

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J. N. Crain1, A. Kirakosian1, K. N. Altmann1, C. Bromberger2, S. C. Erwin3, J. L. McChesney1, J.-L. Lin, and F. J. Himpsel1
1Department of Physics, UW-Madison, 1150 University Avenue, Madison, Wisconsin 53706, USA
2Department of Physics and Center for Material Science, Philipps University, D 35032 Marburg, Germany
3Center for Computational Materials Science, Naval Research Laboratory, Washington, D.C. 20375, USA

See Also: Erratum

Received 29 October 2002; published 2 May 2003

A new chain structure of Au is found on stepped Si(111) which exhibits a 1/4-filled band and a pair of ≥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.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.176805
DOI:
10.1103/PhysRevLett.90.176805
PACS:
73.20.At, 71.10.Pm, 79.60.Jv, 81.07.Vb

See Also

Erratum: J. N. Crain, A. Kirakosian, K. N. Altmann, C. Bromberger, S. C. Erwin, J. L. McChesney, J.-L. Lin, and F. J. Himpsel, Erratum: Fractional Band Filling in an Atomic Chain Structure [Phys. Rev. Lett. 90, 176805 (2003)], Phys. Rev. Lett. 92, 089902 (2004).

 
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