New Model System for a One-Dimensional Electron Liquid: Self-Organized Atomic Gold Chains on Ge(001)

Details New Model System for a One-Dimensional Electron Liquid: Self-Organized Atomic Gold Chains on Ge(001) New Model System for a One-Dimensional Electron Liquid: Self-Organized Atomic Gold Chains on Ge(001)

2008-08-28

arxiv.org/abs/0808.3888v2

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 4 figures, title reworded, references added, accepted in Phys. Rev. Lett. (20 Oct 2008)

Scientific paper

10.1103/PhysRevLett.101.236802

Unique electronic properties of self-organized Au atom chains on Ge(001) in novel c(8x2) long-range order are revealed by scanning tunneling microscopy. Along the nanowires an exceptionally narrow conduction path exists which is virtually decoupled from the substrate. It is laterally confined to the ultimate limit of single atom dimension, and is strictly separated from its neighbors, as not previously reported. The resulting tunneling conductivity shows a dramatic inhomogeneity of two orders of magnitude. The atom chains thus represent an outstandingly close approach to a one-dimensional electron liquid.

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