Electronic structure, imaging contrast and chemical reactivity of graphene moiré on metals
arXiv:1210.1602 · doi:10.1038/srep01072
Abstract
Realization of graphene moiré superstructures on the surface of 4d and 5d transition metals offers templates with periodically modulated electron density, which is responsible for a number of fascinating effects, including the formation of quantum dots and the site selective adsorption of organic molecules or metal clusters on graphene. Here, applying the combination of scanning probe microscopy/spectroscopy and the density functional theory calculations, we gain a profound insight into the electronic and topographic contributions to the imaging contrast of the epitaxial graphene/Ir(111) system. We show directly that in STM imaging the electronic contribution is prevailing compared to the topographic one. In the force microscopy and spectroscopy experiments we observe a variation of the interaction strength between the tip and high-symmetry places within the graphene moiré supercell, which determine the adsorption cites for molecules or metal clusters on graphene/Ir(111).
arXiv commentsubmitted on Sep, 6th 2012
References in corpus (19)
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
- 30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes
- Graphene Segregated on Ni surfaces and Transferred to Insulators
- Two Dimensional Ir-Cluster Lattices on Moiré of Graphene with Ir(111)
- Dirac Cones and Minigaps for Graphene on Ir(111)
- Graphene on Ir(111): Physisorption with chemical modulation
- A versatile fabrication method for cluster superlattices
- 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)
- Formation of Pt induced Ge atomic nanowires on Pt/Ge(001): a DFT study
- Wave function mapping in graphene quantum dots with soft confinement
- Quantum confined electronic states in atomically well-defined graphene nanostructures
- Structural and electronic properties of the graphene/Al/Ni(111) intercalation-like system
- Graphene on Ir(111) characterized by angle-resolved photoemission
- Graphene on Rh(111): STM and AFM studies
- Topographic and electronic contrast of the graphene moiré on Ir(111) probed by scanning tunneling microscopy and non-contact atomic force microscopy
- Finding the bare band: Electron coupling to two phonon modes in potassium-doped graphene on Ir(111)
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- Growth of Epitaxial Graphene: Theory and Experiment
- Graphene growth and properties on metal substrates
- Understanding the origin of band gap formation in graphene on metals: graphene on Cu/Ir(111)
- The Structure and Local Variations of the Graphene Moiré on Ir(111)
- Thermal mirror buckling in freestanding graphene locally controlled by scanning tunneling microscopy
- Rotation misorientated graphene moire superlattices on Cu(111): classical molecular dynamics simulations and scanning tunneling microscopy studies
- Restoring a free-standing character of graphene on Ru(0001)
- Graphene quantum dot on boron nitride: Dirac cone replica and Hofstadter butterfly
- Graphene Ripples as a Realization of a Two-Dimensional Ising Model: A Scanning Tunneling Microscope Study
- Scanning probe microscopy and spectroscopy of graphene on metals
- Multichannel scanning probe microscopy and spectroscopy of graphene moire structures
- Moiré superlattices in strained graphene-gold hybrid nanostructures
- Modulating charge density and inelastic optical response in graphene by atmospheric pressure localized intercalation through wrinkles
- Spatial segregation of substitutional B atoms in graphene patterned by the moiré superlattice on Ir(111)
- Benchmarking van der Waals-treated DFT: The case of hexagonal boron nitride and graphene on Ir(111)
- Effect of moiré superlattice reconstruction in the electronic excitation spectrum of graphene-metal heterostructures
- Ab-initio calculation of the real contact area on the atomic scale
- Spectroscopic and DFT studies of graphene intercalation systems on metals
- Graphene layer on Rh(111): combined DFT, STM, and NC-AFM studies
- Tunable spontaneous emission from layered graphene/dielectric tunnel junctions
- Playing graphene nanodrums: force spectroscopy of graphene on Ru(0001)
- Intercalation of O and N in the Graphene/Ni Interfaces of Different Morphology
- Depressions by stacking faults in nanorippled graphene on metals
- Graphene Layer Morphology as an Indicator of the Metals Alloy Formation at the Interface
- Point defects and their dynamic behaviors in silver monolayer intercalated between graphene and SiC
- Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe
- Moiré induced organization of size-selected Pt clusters soft landed on epitaxial graphene