Two distinct metallic bands associated with monatomic Au wires on the Si(557)-Au surface

Details Two distinct metallic bands associated with monatomic Au wires on the Si(557)-Au surface Two distinct metallic bands associated with monatomic Au wires on the Si(557)-Au surface

2001-05-21

arxiv.org/abs/cond-mat/0105400v1

Physical Review B (Rapid Communications) 65, 81401 (2002)

Physics

Condensed Matter

Materials Science

5 pages with 3 postscript figures. Submitted to PRL on May 10th 2001

Scientific paper

10.1103/PhysRevB.65.081401

The Si(557)-Au surface, containing monatomic Au wires parallel to the steps, has been proposed as an experimental realization of an ideal one-dimensional metal. In fact, recent photoemission experiments on this system (Nature 402, 504 (1999)) found two peaks that were interpreted in terms of the spin-charge separation in a Luttinger liquid. Our first-principles density functional calculations reveal two metallic bands associated with Au-Si bonds, instead of the single band expected from the Au 6s states, providing an alternative explanation for the experimental observations.

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