Multichannel scanning probe microscopy and spectroscopy of graphene moire structures

Abstract

The graphene moire structures on metals, as they demonstrate both long (moire) and short (atomic) scale ordered structures, are the ideal systems for the application of scanning probe methods. Here we present the complex studies of the graphene/Ir(111) system by means of 3D scanning tunnelling and atomic force microscopy/spectroscopy as well as Kelvin-probe force microscopy. All results clearly demonstrate a variation of the moire and atomic scale contrasts as a function of the bias voltage as well as the distance between the scanning probe and the sample, allowing to discriminate between topographic and electronic contributions in the imaging of a graphene layer on metals. The presented results are accompanied by the state-of-the-art density functional theory calculations demonstrating the excellent agreement between theoretical and experimental data.

30 pages, 13 figures, submitted on 20.09.2013

References in corpus (14)

• The electronic properties of graphene
• Doping graphene with metal contacts
• Dirac Cones and Minigaps for Graphene on Ir(111)
• Graphene on Ir(111): Physisorption with chemical modulation
• Graphene on metallic surfaces: problems and perspectives
• In-plane orientation effects on the electronic structure, stability and Raman scattering of monolayer graphene on Ir(111)
• Structural and electronic properties of the graphene/Al/Ni(111) intercalation-like system
• Graphene on Rh(111): STM and AFM studies
• Electronic structure, imaging contrast and chemical reactivity of graphene moiré on metals
• Analytical Approach to the Local Contact Potential Difference on (001) Ionic Surfaces: Implications for Kelvin Probe Force Microscopy
• Understanding the atomic-scale contrast in Kelvin Probe Force Microscopy
• The Structure and Local Variations of the Graphene Moiré on Ir(111)
• Topographic and electronic contrast of the graphene moiré on Ir(111) probed by scanning tunneling microscopy and non-contact atomic force microscopy
• Viable thermionic emission from graphene-covered metals

Cited by in corpus (8)

• Molecular Assembly on Two-Dimensional Materials
• Graphene growth and properties on metal substrates
• Scanning probe microscopy and spectroscopy of graphene on metals
• Topography of the graphene/Ir(111) moir{é} studied by surface x-ray diffraction
• Probing crystallinity of graphene samples via the vibrational density of states
• Spectroscopic and DFT studies of graphene intercalation systems on metals
• Intercalation of O${}_2$ and N${}_2$ in the Graphene/Ni Interfaces of Different Morphology
• Image-potential states on a 2D Gr-ferromagnet hybrid: enhancing spin and stacking sensing