title: Coupled pb chains on si(557): origin of one-dimensional conductance.
abstract: The Pb/Si(557) system exhibits a strong anisotropy in conductance below 78 K, with the evolution of a characteristic chain structure. Here we show, using angle-resolved photoemission, that chain ordering results in complete Fermi-like nesting in the direction normal to the chains; in addition, the domain structure along the chains forms split-off valence bands with mesoscopic Fermi wavelengths which induce the 1D conductance without further instabilities at low temperatures.
authors: Institut für Festkörperphysik, Leibniz-Universität Hannover, 30167 Hannover, Germany.
authors: C
authors: C
authors: Tegenkamp
authors: T
authors: T
authors: Ohta
authors: J L
authors: JL
authors: McChesney
authors: H
authors: H
authors: Dil
authors: E
authors: E
authors: Rotenberg
authors: H
authors: H
authors: Pfnür
authors: K
authors: K
authors: Horn