Biased bilayer graphene: semiconductor with a gap tunable by electric field effect

Abstract

We demonstrate that the electronic gap of a graphene bilayer can be controlled externally by applying a gate bias. From the magneto-transport data (Shubnikov-de Haas measurements of the cyclotron mass), and using a tight binding model, we extract the value of the gap as a function of the electronic density. We show that the gap can be changed from zero to mid-infrared energies to a value as large as 0.3 eV by using fields of < 1 V/nm, below the electric breakdown of SiO2. The opening of a gap is clearly seen in the quantum Hall regime.

4 pages, 5 figures. To appear in Physical Review Letters, November 2007

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• Asymmetry gap in the electronic band structure of bilayer graphene
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• A DFT study on the electronic and magnetic properties of triangular graphene antidot lattices
• Vacancy induced zero energy modes in graphene stacks: The case of ABC trilayer
• Possible Broken Inversion and Time-Reversal Symmetry State of Electrons in Bilayer Graphene
• The Nonlinear Optical Effects of Opening a Gap in Graphene
• Spectral properties of excitons in the bilayer graphene
• Double quantum dots defined in bilayer graphene
• Spin polarization and magnetoresistance through a ferromagnetic barrier in bilayer graphene
• Growth, charge and thermal transport of flowered graphene
• Moiré excitons in biased twisted bilayer graphene under pressure
• Electric bias control on impurity effects in bigraphene
• Reentrant Kondo effect in a quantum impurity coupled to a metal-semiconductor hybrid contact
• Gully quantum Hall ferromagnetism in biased trilayer graphene
• Quantum magneto-optics of graphite family
• Spin and valley manipulation in single and double electrostatic silicene quantum dots
• Current flow in biased bilayer graphene: the role of sublattices
• dmu/dn In suspended bilayer graphene: the interplay of disorder and band gap
• Intrinsic resistance peaks in AB-stacked multilayer graphene with odd number of layers
• Impurities and electronic localization in graphene bilayers
• Experimental signature of bandgap opening in bilayer graphene at metal contacts
• Bolometric arrays and infrared sensitivity of VO2 films with varying stoichiometry
• Topologically protected gap states and resonances in gated trilayer graphene
• Excitonic condensation and metal-semiconductor transition in AA bilayer graphene in the external magnetic field
• Valley polarization, magnetization, and superconductivity in bilayer graphene near the van Hove singularity
• Moire-enabled topological superconductivity in twisted bilayer graphene
• Stabilizing the inverted phase of a WSe${}_2$/BLG/WSe${}_2$ heterostructure via hydrostatic pressure
• Structural and Electrical Properties of Bilayer SiX (X= N, P, As and Sb)
• Ultrafast valley polarization in bilayer graphene
• Transmission across a bilayer graphene region
• Graphene under the influence of Aharonov-Bohm flux and constant magnetic field
• Gate-induced Gap in Bilayer Graphene Suppressed by Coulomb Repulsion
• Substrate-induced structures of bismuth adsorption on graphene: a first principle study
• Edge proximity-induced magnetoresistance and spin polarization in ferromagnetic gated bilayer graphene nanoribbon
• Bilayer graphene spectral function in RPA and self-consistent GW
• Reading and writing charge on graphene devices
• Intrinsic Limits of Subthreshold Slope in Biased Bilayer Graphene Transistor
• First order ferromagnetic phase transition in the low electronic density regime of a biased graphene bilayer
• Bilayer graphene Hall bar with a pn-junction
• Band gap engineering in finite elongated graphene nanoribbon heterojunctions: Tight-binding model
• Spin Dynamics in Bilayer Graphene : Role of Electron-Hole Puddles and the Dyakonov-Perel Mechanism
• Dynamics of van der Waals Charge Qubit in 2D Bilayers: Ab initio Quantum Transport and Qubit Measurement
• Inducing topological flat bands in bilayer graphene with electric and magnetic superlattices
• High-Bandwidth, Variable-Resistance Differential Noise Thermometry
• Low energy band structure in Bernal stacked hexlayer graphene: Landau fan diagram and resistance ridge
• Fingerprints of bosonic symmetry protected topological state in a quantum point contact
• Nonlinear Properties of Gated Graphene in a Strong Electromagnetic Field
• Electrically Tunable Fine Structure of Negatively Charged Excitons in Gated Bilayer Graphene Quantum Dots
• Ordered-Current State of Electrons in Bilayer Graphene
• Orbital Lamb shift and mixing of the pseudo-zero-mode Landau levels in ABC-stacked trilayer graphene
• Chiral tunneling in single layer graphene with Rashba spin-orbit coupling: spin currents
• Large-signal model of the bilayer graphene field-effect transistor targeting radio-frequency applications: theory versus experiment
• Supercurrent reversal in Josephson junctions based on bilayer graphene flakes
• Bilayer graphene in strong ultrafast laser fields
• Single layer graphene with electronic properties as gated bilayer
• Absence of broken inversion symmetry phase of electrons in bilayer graphene under charge density fluctuations
• Chiral Luttinger liquids in graphene tuned by irradiation
• Correlation driven metallic and half-metallic phases in a band insulator
• Electronic Structures and Their Landau Quantizations in Twisted Graphene Bilayer and Trilayer
• Quantum phase transitions into Kondo states in bilayer graphene
• Enhanced intrinsic voltage gain in artificially stacked bilayer CVD graphene field effect transistors
• Unconventional superconductivity in a strongly correlated band-insulator without doping
• Stacking sensitive topological phases in a bilayer Kane-Mele-Hubbard model at quarter filling
• Effect of weak impurities on conductivity of uniaxially strained graphene
• Electron transmission through the stacking domain boundary in multilayers graphene
• Spatially resolved electronic structure of twisted graphene
• Pseudodiffusive conductance, quantum-limited shot noise, and Landau-level hierarchy in biased graphene bilayer
• Study of edge states and conductivity in spin-orbit coupled bilayer graphene
• Tunable nonlinear excitonic optical response in biased bilayer graphene
• Moiré-modulated band gap and van Hove singularities in twisted bilayer germanene
• Conductivity between Luttinger liquids: coupled chains and bilayer graphene
• h-BN layer induced chiral decomposition in the electronic properties of multilayer graphene
• Theory of the Strain-Induced Magnetoelectric Effect in Planar Dirac Systems
• Layer-by-layer assembly of multilayer optical lattices: Application to displaced dice lattice
• Magnetotransport study of the mini-Dirac cone in AB-stacked four- to six-layer graphene under perpendicular electric field
• Designer fermion models in functionalized graphene bilayers
• Probing Layer Localization in Twisted Graphene Bilayers via Cyclotron Resonance
• Electrically controllable magnetic order in the bilayer Hubbard model on honeycomb lattice --- a determinant quantum Monte Carlo study
• Graphene/g-C2N bilayer:gap opening, enhanced visible light response and electrical field tuning band structure
• Bilayer honeycomb lattice with ultracold atoms: Multiple Fermi surfaces and incommensurate spin density wave instability
• Conduction band population in graphene in ultrashort strong laser field: case of massive Dirac particles
• Electronic transport of bilayer graphene with asymmetry line defects
• Precise determination of critical points of topological phase transitions via shift current in two-dimensional inversion asymmetric insulators
• Second and third harmonics generation by coherent sub-THz radiation at induced Lifshitz transitions in gapped bilayer graphene
• Electronic transport properties and quantum localization effects monitored by selective functionalization in Bernal bilayer graphene
• Optical Properties of Gated Bilayer Graphene Quantum Dots with Trigonal Warping
• Electronic structure and transport in materials with flat bands: 2D materials and quasicrystals
• Hofstadter butterflies in magnetically modulated graphene bilayer: an algebraic approach
• Gate-independent energy gap in non-covalently intercalated bilayer graphene on SiC(0001)
• Minimal conductivity and signatures of quantum criticality in ballistic graphene bilayer
• Disorder induced field effect transistor in bilayer and trilayer graphene
• Electrical properties of in-plane-implanted graphite nanoribbons
• Optical Properties of Graphene in Magnetic and Electric fields
• Magnetoconductance of the Corbino disk in graphene: Chiral tunneling and quantum interference in the bilayer case
• Voltage Tunable Plasmon Propagation in Dual Gated Bilayer Graphene
• Band structure asymmetry of bilayer graphene revealed by infrared spectroscopy
• Dynamical freezing and switching in periodically driven bilayer graphene
• Gapless states and current control in strongly distorted gated trilayer graphene
• Electron binding energy of a donor in bilayer graphene with gate-tunable gap
• Spin-Polarized-Current State of Electrons in Bilayer Graphene
• Pseudo spin-orbit coupling of Dirac particles in graphene spintronics
• X-ray edge singularity of bilayer graphene
• Theory of field-modulated spin-valley-orbital pseudospin physics
• Persistent currents in topological and trivial confinement in silicene
• Tunable exciton polaritons in band-gap engineered hexagonal boron nitride
• Wavefront dislocations in graphene systems revealed by transport measurement
• Probing valley phenomena with gate-defined valley splitters
• Electronic structure and optical properties of Graphene Monoxide
• Sliding-induced topological transitions in bilayer biphenylene
• All-electrical valley filtering in graphene systems (I): A path to integrated electro-valleytronics
• Gap state charge induced spin-dependent negative differential resistance in tunnel junctions
• Edge dependece of nonlocal transport in gapped bilayer graphene
• Spontaneous charge-ordered state in Bernal-stacked bilayer graphene
• High energy shift in the optical conductivity spectrum of the bilayer graphene
• Pressure sensing using vertically aligned carbon nanotubes on a flexible substrate
• Continuous-distribution puddle model for conduction in trilayer graphene
• Current orderings of interacting electrons in bilayer graphene
• Collective resonances near zero energy induced by a point defect in bilayer graphene
• Effect of asymmetric Fermi velocity on trigonally warped spectrum of bilayer graphene
• Disorder-induced magnetooscillations in bilayer graphene at high bias
• Strongly Coupled Exciton--Hyperbolic-phonon-polariton Hybridized States in hBN-encapsulated Biased Bilayer Graphene
• Low-energy trions in graphene quantum dots
• Anderson Transition in Disordered Bilayer Graphene
• Interaction-enhanced electron-hole and valley asymmetries in the lowest Landau level of ABA-stacked trilayer graphene
• Unconventional transport properties in systems with triply degenerate quadratic band crossings
• Electric Field Effects on Graphene Materials
• Edge states in bilayer graphene in a magnetic field
• Tunable exciton polaritons in biased bilayer graphene
• Pseudo-zero-mode Landau levels and pseudospin waves in bilayer graphene
• Competing topological phases in few-layer graphene
• Graphene-based Bolometers
• Multilayer C2N: Effect of Stacking Order and Number of Layers on Bandgap and Its Controlled Electronic Properties by External Electric Field
• Photoinduced polarization enhancement in biased bilayer graphene in the Landau level regime
• Gate-defined Kondo lattices with valley-helical quantum dot arrays
• Terahertz Landau level spectroscopy of Dirac fermions in millimeter-scale twisted bilayer graphene
• Quantization and quantum oscillations of the sublattice charge order in Dirac insulators
• Topologically protected one-dimensional electronic states in group IV two-dimensional Dirac materials
• Enabling the bulk photovoltaic effect in centrosymmetric materials through an external electric field
• Mode-selective cloaking and phase-matching cavity resonances in bilayer graphene transport
• Persistent current and orbital magnetization along a valley-contrasting junction in bilayer graphene in a magnetic field
• Gate-induced magneto-oscillation phase anomalies in graphene bilayers
• Controlled formation of an isolated miniband in bilayer graphene on an almost commensurate $\sqrt{3}\times \sqrt{3}$ substrate
• Possible gapless helical edge states in hydrogenated graphene
• Spatial variation of energy gap and Landau levels around gapped bilayer graphene domain walls
• Optical properties of biased bilayer graphene due to gap parameter effects
• Nagaoka spin-valley ordering in silicene quantum dots
• The Nature of Interlayer Binding and Stacking of $sp$-$s{p}^2$ Hybridized Carbon Layers: A Quantum Monte Carlo Study
• Growth of Tall Vertical Carbon Nanotube Forests using Al-Fe Catalysts and Transfer to Flexible Substrates
• Energy Band Engineering of Periodic Scatterers by Quasi-1D Confinement
• Strain-induced stacking transition in bilayer graphene
• The infrared spectra of ABC-stacking tri- and tetra-layer graphenes studied by first-principles calculations
• Insulator-Metal Transition and Magnetic Crossover in Bilayer Graphene
• Quantum Hall conductance of two-terminal graphene devices
• Evanescent-mode-assisted Klein tunneling in dual-gated bilayer graphene
• Weak localization and universal conductance fluctuations in large area twisted bilayer graphene
• Mode-Resolved Multiband Ballistic Transport and Conductance Thresholds in Bilayer Graphene Junctions
• Tuning superconducting pairing symmetry via a staggered potential in the doped honeycomb Hubbard model
• Electrostatic tuning of bilayer graphene edge modes
• Klein tunneling through triple barrier in AB bilayer graphene
• Electric field control of spins in bilayer graphene: Local moment formation and local moment interactions
• Effects of Interfacial Distance and Electric Field on Graphene-Silicene Hybrid Structures
• 2D Black Phosphorus Carbide: Rippling and Formation of Nanotubes
• Impurity states and Localization in Bilayer Graphene: the Low Impurity Concentration Regime
• Phase boundary of spin-polarized-current state of electrons in bilayer graphene
• Bilayer Phosphorene: Effect of Stacking Order on Bandgap and its Potential Applications in Thin-Film Solar Cells
• Tunable band gap in few-layer graphene by surface adsorption
• Magnetic quantization in multilayer graphenes
• Bias Free Gap Creation in Bilayer Graphene
• Electronic and Phonon Instabilities in Bilayer Graphene under Applied External Bias
• Electric field effect in boron and nitrogen doped graphene bilayers
• Revealing the non-adiabatic and non-Abelian multiple-band effects via anisotropic valley Hall conduction in bilayer graphene