Single-crystal graphene on Ir(110)

Abstract

A single-crystal sheet of graphene is synthesized on the low-symmetry substrate Ir(110) by thermal decomposition of C${}_2$H${}_4$ at 1500 K. Using scanning tunneling microscopy, low-energy electron diffraction, angle-resolved photoemission spectroscopy, and ab initio density functional theory the structure and electronic properties of the adsorbed graphene sheet and its moiré with the substrate are uncovered. The adsorbed graphene layer forms a wave pattern of nm wave length with a corresponding modulation of its electronic properties. This wave pattern is demonstrated to enable the templated adsorption of aromatic molecules and the uniaxial growth of organometallic wires. Not limited to this, graphene on Ir(110) is also a versatile substrate for 2D-layer growth and makes it possible to grow epitaxial layers on ureconstructed Ir(110).

34 pages, 14 figures

References in corpus (6)

• A Higher-Accuracy van der Waals Density Functional
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Cited by in corpus (3)

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• Which chromium-sulfur compounds exist as 2D material?
• Growth of aligned and twisted hexagonal boron nitride on Ir(110)