Single-crystal graphene on Ir(110)

A single-crystal sheet of graphene is synthesized on the low-symmetry\nsubstrate Ir(110) by thermal decomposition of C$_2$H$_4$ at 1500 K. Using\nscanning tunneling microscopy, low-energy electron diffraction, angle-resolved\nphotoemission spectroscopy, and ab initio density functional theory the\nstructure and electronic properties of the adsorbed graphene sheet and its\nmoir\\'e with the substrate are uncovered. The adsorbed graphene layer forms a\nwave pattern of nm wave length with a corresponding modulation of its\nelectronic properties. This wave pattern is demonstrated to enable the\ntemplated adsorption of aromatic molecules and the uniaxial growth of\norganometallic wires. Not limited to this, graphene on Ir(110) is also a\nversatile substrate for 2D-layer growth and makes it possible to grow epitaxial\nlayers on ureconstructed Ir(110).\n