Tuning the effective fine structure constant in graphene: opposing effects of dielectric screening on short- and long-range potential scattering

Abstract

We reduce the dimensionless interaction strength in graphene by adding a water overlayer in ultra-high vacuum, thereby increasing dielectric screening. The mobility limited by long-range impurity scattering is increased over 30 percent, due to the background dielectric constant enhancement leading to reduced interaction of electrons with charged impurities. However, the carrier-density-independent conductivity due to short range impurities is decreased by almost 40 percent, due to reduced screening of the impurity potential by conduction electrons. The minimum conductivity is nearly unchanged, due to canceling contributions from the electron/hole puddle density and long-range impurity mobility. Experimental data are compared with theoretical predictions with excellent agreement.

Revised version, accepted for publication in Phys. Rev. Lett

References in corpus (28)

• Two-Dimensional Gas of Massless Dirac Fermions in Graphene
• The Raman Fingerprint of Graphene
• Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
• Ultrahigh electron mobility in suspended graphene
• Giant Intrinsic Carrier Mobilities in Graphene and Its Bilayer
• Observation of Electron-Hole Puddles in Graphene Using a Scanning Single Electron Transistor
• Charged Impurity Scattering in Graphene
• Atomic Structure of Graphene on SiO2
• Carrier transport in 2D graphene layers
• A self-consistent theory for graphene transport
• Measurement of Scattering Rate and Minimum Conductivity in Graphene
• Quantum Hall Ferromagnetism in Graphene
• Infrared spectroscopy of Landau levels in graphene
• Enhancement of Carrier Mobility in Semiconductor Nanostructures by Dielectric Engineering
• Evidence of the role of contacts on the observed electron-hole asymmetry in graphene
• Effect of Disorder on Transport in Graphene
• Room-Temperature Superfluidity in Graphene Bilayers
• The Coulomb impurity problem in graphene
• Vacuum Polarization and Screening of Supercritical Impurities in Graphene
• Coulomb Interactions and Ferromagnetism in Pure and Doped Graphene
• Quantum-critical relativistic magnetotransport in graphene
• Numbers of donors and acceptors from transport measurements in graphene
• Graphene via large N I: Renormalization
• Screening of Coulomb Impurities in Graphene
• Coulomb impurity in graphene
• Scattering mechanisms and Boltzmann transport in graphene
• Transport in suspended graphene
• Conductivity of graphene: How to distinguish between samples with short and long range scatterers

Cited by in corpus (132)

• Electronic transport in two dimensional graphene
• Electron-Electron Interactions in Graphene: Current Status and Perspectives
• Colloquium: The transport properties of graphene: An introduction
• Gauge fields in graphene
• Dirac materials
• High Mobility Ambipolar MoS2 Field-Effect Transistors: Substrate and Dielectric Effects
• Defect scattering in graphene
• Fermi velocity engineering in graphene by substrate modification
• Boron Nitride Substrates for High Mobility Chemical Vapor Deposited Graphene
• Tunable Kondo Effect in Graphene with Defects
• Effect of high-k environment on charge carrier mobility in graphene
• Resonant scattering by realistic impurities in graphene
• Adhesion and electronic structure of graphene on hexagonal boron nitride substrates
• Effect of high-K dielectrics on charge transport in graphene
• On resonant scatterers as a factor limiting carrier mobility in graphene
• Gate-Controlled Ionization and Screening of Cobalt Adatoms on a Graphene Surface
• Monovalent impurities on graphene: midgap states and migration barriers
• High-Mobility Few-Layer Graphene Field Effect Transistors Fabricated on Epitaxial Ferroelectric Gate Oxides (Supplementary Information)
• High-Mobility Few-Layer Graphene Field Effect Transistors Fabricated on Epitaxial Ferroelectric Gate Oxides
• Random strain fluctuations as dominant disorder source for high-quality on-substrate graphene devices
• Manipulation of Spin Transport in Graphene by Surface Chemical Doping
• The Deposition of High-Quality HfO2 on Graphene and the Effect of Remote Oxide Phonon Scattering
• Drude weight, plasmon dispersion, and a.c. conductivity in doped graphene sheets
• Correlated charged impurity scattering in graphene
• Theory of carrier transport in bilayer graphene
• Dielectric Screening in Atomically Thin Boron Nitride Nanosheets
• Magneto-transport in Disordered Graphene: from Weak Localization to Strong Localization
• Disorder and Electronic Transport in Graphene
• Transport and elastic scattering times as probes of the nature of impurity scattering in single and bilayer graphene
• Probing charge scattering mechanisms in suspended graphene by varying its dielectric environment
• Electronic properties of a biased graphene bilayer
• Self-biased Reconfigurable Graphene Stacks for Terahertz Plasmonics
• The effective fine structure constant of freestanding graphene measured in graphite
• The quantum scattering time and its implications on scattering sources in graphene (Supplementary)
• The quantum scattering time and its implications on scattering sources in graphene
• Phase-transitions in spin-crossover thin films probed by graphene transport measurements
• The role of electron-electron interactions in two-dimensional Dirac fermions
• Scanning Tunneling Microscopy Study and Nanomanipulation of Graphene-Coated Water on Mica
• Diffusive Charge Transport in Graphene on SiO2
• Transport through graphene on SrTiO3
• Theory of charged impurity scattering in two dimensional graphene
• Dielectric Thickness Dependence of Carrier Mobility in Graphene with HfO2 Top Dielectric
• Electron density distribution and screening in rippled graphene sheets
• Charged impurity scattering in bilayer graphene
• Effect of nonhomogenous dielectric background on the plasmon modes in graphene double-layer structures at finite temperatures
• Current-voltage characteristics of graphene devices: interplay between Zener-Klein tunneling and defects
• Effect of Spatial Charge Inhomogeneity on 1/f Noise Behavior in Graphene
• Crossover from quantum to Boltzmann transport in graphene
• Effective medium theory for disordered two-dimensional graphene
• Carrier screening, transport, and relaxation in 3D Dirac semimetals
• Quantum critical behavior in three dimensional lattice Gross-Neveu models
• Theory of Interfacial Plasmon-Phonon Scattering in Supported Graphene
• The effect of a velocity barrier on the ballistic transport of Dirac fermions
• Effect of short- and long-range scattering in the conductivity of graphene: Boltzmann approach vs tight-binding calculations
• Adatoms in Graphene
• Ferroelectric Domain Patterning Controlled Schottky Junction State in Monolayer MoS${}_2$
• Measurement of Collective Dynamical Mass of Dirac Fermions in Graphene
• Interaction driven metal-insulator transition in strained graphene
• Theoretical Study of Corundum as an Ideal Gate Dielectric Material for Graphene Transistors
• Pseudospin Order in Monolayer, Bilayer, and Double-Layer Graphene
• Many-body orbital paramagnetism in doped graphene sheets
• Optical Response and Ground State of Graphene
• Tuning the Fermi velocity in Dirac materials with an electric field
• Pseudospin in optical and transport properties of graphene
• Hydrodynamic Model for Conductivity in Graphene
• Disorder by order in graphene
• Neutrality point of graphene with coplanar charged impurities
• Direct growth of mm-size twisted bilayer graphene by plasma-enhanced chemical vapor deposition
• Transport coefficients of graphene: Interplay of impurity scattering, Coulomb interaction, and optical phonons
• Uncovering the Dominant Scatterer in Graphene Sheets on SiO2
• Atmospheric doping effects in epitaxial graphene: correlation of local and global electrical measurements
• Dynamic polarization of graphene by moving external charges: random phase approximation
• Metallic and Insulating Adsorbates on Graphene
• Integrating Functional Oxides with Graphene
• Nonequilibrium plasmons with gain in graphene
• Electron Transport Properties of Bilayer Graphene
• Directional excitation of graphene surface plasmons
• Electrical conductivity in graphene with point defects
• Spin Orbit Interaction and Isotropic Electronic Transport in Graphene
• Estimation of residual carrier density near the Dirac point in graphene through quantum capacitance measurement
• Electron-Phonon Coupling in Highly-Screened Graphene
• Conductivity of a graphene strip: width and gate-voltage dependencies
• On the exact quantum scale invariance of three-dimensional reduced QED theories
• Gate-tunable coherent perfect absorption of terahertz radiation in graphene
• Charged Impurity Scattering in Graphene Nanostructures
• Two-dimensional electronic transport on the surface of 3D topological insulators
• Multiscale charge transport in van der Waals thin films: reduced graphene oxide as case study
• Carrier transport theory for twisted bilayer graphene in the metallic regime
• Enhancement of non-local exchange near isolated band-crossings in graphene
• Ferroelectric-like SrTiO3 surface dipoles probed by graphene
• Optical conductivity study of screening of many-body effects in graphene interfaces
• Friction force on slow charges moving over supported graphene
• Conductance through disordered graphene nanoribbons: Standard and anomalous electron localization
• Temperature dependence of the diffusive conductivity of bilayer graphene
• Mechanically transferred large-area Ga${}_2$O${}_3$ passivates graphene and suppresses interfacial phonon scattering
• Substrate effects on quasiparticles and excitons in graphene nanoflakes
• Influence of interface dipole layers on the performance of graphene field effect transistors
• Non-linear screening of external charge by doped graphene
• Optical conductivity renormalization of graphene on SrTiO${}_3$ due to resonant excitonic effects mediated by Ti 3\textit{d} orbitals
• A Comparative Study of Substrates Disorder on Mobility in the Graphene Nanoribbon: Charged Impurity, Surface Optical Phonon, Surface Roughness
• Graphene on SrTiO3
• Semiclassical Boltzmann transport theory for graphene multilayers
• Clustered impurities and carrier transport in supported graphene
• Conductivity and scattering in graphene bilayers: numerically exact results vs. Boltzmann approach
• Magneto-Transport Properties of Exfoliated Graphene on GaAs
• Electronic transport properties of Ir-decorated graphene
• Impurity scattering induced carrier transport in twisted bilayer graphene
• Origin of the quasi-universality of the graphene minimal conductivity
• Polarization-sensitive absorption of THz radiation by interacting electrons in chirally stacked multilayer graphene
• Versatile sputtering technology for Al2O3 gate insulators on graphene
• Electronic transport and scattering times in tungsten-decorated graphene
• Control over band structure and tunneling in Bilayer Graphene induced by velocity engineering
• First-principles multiscale modelling of charged adsorbates on doped graphene
• Transport through the network of topological channels in HgTe based quantum well
• Theory of carrier transport in graphene double-layer structure with carrier imbalance
• Shot noise fluctuations in disordered graphene nanoribbons near the Dirac point
• Unexpected hole doping of graphene by osmium adatoms
• Collinear scattering of photoexcited carriers in graphene
• Impact of Calcium on Transport Property of Graphene
• Experimental evidence of plasmarons and effective fine structure constant in electron-doped graphene/h-BN heterostructure
• Enhancement of spin-orbit coupling and magnetic scattering in hydrogenated graphene
• Dielectric screening of surface states in a topological insulator
• Absence of broken inversion symmetry phase of electrons in bilayer graphene under charge density fluctuations
• Remote Surface Optical Phonon Scattering in Ferroelectric Ba${}_{0.6}$Sr${}_{0.4}$TiO${}_3$ Gated Graphene
• Drude weight, plasmon dispersion, and pseudospin response in doped graphene sheets
• Effect of asymmetric Fermi velocity on trigonally warped spectrum of bilayer graphene
• Functionalized Graphene in Quantizing Magnetic Field: The case of bunched impurities
• Nuclear magnetic resonance line shapes of Wigner crystals in ${}^{13}$C-enriched graphene
• On the Wiedemann-Franz law violation in Graphene and quark-gluon plasma systems
• Device Chemistry of Graphene Transistors
• Tuning Transport Properties of Topological Edge States of Bi(111) Bilayer Film by Edge Adsorption
• Non-Adhesive Transfer Process of Carbon Nanotube Forests onto Flexible Kapton Substrates