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

Daniel Sanchez-Portal·Julian D. Gale·Alberto Garcia·Richard M. Martin
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Abstract

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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Daniel Sanchez-Portal, Julian D. Gale, Alberto Garcia, Richard M. Martin. 2001-05-21. Two distinct metallic bands associated with monatomic Au wires on the Si(557)-Au surface. https://doi.org/10.1103/physrevb.65.081401

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