Graphene-like Silicon Nano-ribbons on the Silver (110) Surface

Abstract

Silicene, a monolayer of silicon atoms packed into a two-dimensional honeycomb lattice is the challenging hypothetical reflection in the silicon realm of graphene, a one-atom thick graphite sheet, presently the hottest new material in condensed matter physics and nanotechnology. If existing, it would also reveal a cornucopia of new physics and potential applications. Here, we reveal the catalytic growth of graphene-like silicon nano-ribbons self-aligned in a massively parallel array on the anisotropic Ag(110) surface. We compare with one-dimensional (1D) structures formed, more classically, the other way around, upon depositing gold or silver on the silicon (111) surface. Finally, we envisage wide ranging applications for these novel silicene stripes.