Scanning gate microscopy of current-annealed single layer graphene
arXiv:0911.3832 · doi:10.1063/1.3327829
Abstract
We have used scanning gate microscopy to explore the local conductivity of a current-annealed graphene flake. A map of the local neutrality point (NP) after annealing at low current density exhibits micron-sized inhomogeneities. Broadening of the local e-h transition is also correlated with the inhomogeneity of the NP. Annealing at higher current density reduces the NP inhomogeneity, but we still observe some asymmetry in the e-h conduction. We attribute this to a hole doped domain close to one of the metal contacts combined with underlying striations in the local NP.
8 pages, 4 figures
References in corpus (19)
- Electric Field Effect in Atomically Thin Carbon Films
- The Raman Fingerprint of Graphene
- Ultrahigh electron mobility in suspended graphene
- Energy Band Gap Engineering of Graphene Nanoribbons
- Electrochemically Top Gated Graphene: Monitoring Dopants by Raman Scattering
- Graphene Nano-Ribbon Electronics
- Tuning the graphene work function by electric field effect
- A self-consistent theory for graphene transport
- Fractional quantum Hall effect and insulating phase of Dirac electrons in graphene
- Raman Fingerprint of Charged Impurities in Graphene
- Rayleigh Imaging of Graphene and Graphene Layers
- Current-induced cleaning of graphene
- Edge-functionalized and substitutional doped graphene nanoribbons: electronic and spin properties
- Energy dissipation in graphene field-effect transistors
- Spatially resolved spectroscopy of monolayer graphene on SiO2
- Raman imaging of doping domains in graphene on SiO2
- Electronic transport in locally gated graphene nanoconstrictions
- Diffusive Charge Transport in Graphene on SiO2
- Effective medium theory for disordered two-dimensional graphene
Cited by in corpus (21)
- Colloquium: The transport properties of graphene: An introduction
- Thermal infrared emission reveals the Dirac point movement in biased graphene
- Electronic properties of graphene: a perspective from scanning tunneling microscopy and magneto-transport
- Colloquium: Graphene spectroscopy
- Imaging, simulation, and electrostatic control of power dissipation in graphene devices
- Imaging Localized States in Graphene Nanostructures
- On the imaging of electron transport in semiconductor quantum structures by scanning-gate microscopy: successes and limitations
- Electrical observation of a tunable band gap in bilayer graphene nanoribbons at room temperature
- Scanning Gate Microscopy on Graphene: Charge Inhomogeneity and Extrinsic Doping
- Rashba Spin Orbit Interaction and Birefringent Electron Optics in Graphene
- Unraveling quantum Hall breakdown in bilayer graphene with scanning gate microscopy
- Imaging ballistic carrier trajectories in graphene using scanning gate microscopy
- Tilted potential induced coupling of localized states in a graphene nanoconstriction
- Direct Imaging of Coherent Quantum Transport in Graphene Heterojunctions
- Carrier type modulation in current annealed graphene layers
- Scanning gate microscopy of magnetic focusing in graphene devices: quantum vs. classical simulation
- Bolometric arrays and infrared sensitivity of VO2 films with varying stoichiometry
- Reading and writing charge on graphene devices
- Tip induced doping effects in local tunnel spectra of graphene
- Magnetic field induced charge redistribution in disordered graphene double quantum dots
- Growth of Tall Vertical Carbon Nanotube Forests using Al-Fe Catalysts and Transfer to Flexible Substrates