Double nonequivalent chain structure on a vicinal Si(557)-Au surface
Double nonequivalent chain structure on a vicinal Si(557)-Au surface
We study electronic and topographic properties of the vicinal Si(557)-Au surface using scanning-tunneling microscopy (STM) and a reflection of high-energy electron diffraction technique. STM data reveal double wire structures along terraces. Moreover, the behavior of the voltage-dependent STM tip-surface distance is different in different chains. While the one chain shows …