Scanning tunneling microscopy of monoatomic gold chains on vicinal Si(335) surface: experimental and theoretical study

摘要

We study electronic and topographic properties of the Si(335) surface,containing Au wires parallel to the steps. We use scanning tunneling microscopy(STM) supplemented by reflection of high energy electron diffraction (RHEED)technique. The STM data show the space and voltage dependent oscillations ofthe distance between STM tip and the surface which can be explained within oneband tight binding Hubbard model. We calculate the STM current usingnonequilibrium Keldysh Green function formalism.