Minimum Conductivity and Evidence for Phase Transitions in Ultra-clean Bilayer Graphene

Abstract

Bilayer graphene (BLG) at the charge neutrality point (CNP) is strongly susceptible to electronic interactions, and expected to undergo a phase transition into a state with spontaneous broken symmetries. By systematically investigating a large number of singly- and doubly-gated bilayer graphene (BLG) devices, we show that an insulating state appears only in devices with high mobility and low extrinsic doping. This insulating state has an associated transition temperature Tc~5K and an energy gap of ~3 meV, thus strongly suggesting a gapped broken symmetry state that is destroyed by very weak disorder. The transition to the intrinsic broken symmetry state can be tuned by disorder, out-of-plane electric field, or carrier density.

References in corpus (45)

• The electronic properties of graphene
• Unconventional quantum Hall effect and Berry's phase of 2pi in bilayer graphene
• Asymmetry gap in the electronic band structure of bilayer graphene
• A self-consistent theory for graphene transport
• Temperature dependent transport in suspended graphene
• Measurement of Scattering Rate and Minimum Conductivity in Graphene
• Ab Initio Theory of Gate Induced Gaps in Graphene Bilayers
• Topological confinement in bilayer graphene
• Stacking-Dependent Band Gap and Quantum Transport in Trilayer Graphene
• Spontaneous Quantum Hall States in Chirally-stacked Few-Layer Graphene Systems
• Carrier scattering, mobilities and electrostatic potential in mono-, bi- and tri-layer graphenes
• Band Structure of ABC-Stacked Graphene Trilayers
• Coulomb-driven broken-symmetry states in doubly gated suspended bilayer graphene
• Broken symmetry states and divergent resistance in suspended bilayer graphene
• Transport Spectroscopy of Symmetry-Broken Insulating States in Bilayer Graphene
• Interaction-Driven Spectrum Reconstruction in Bilayer Graphene
• Transport in Bilayer Graphene: Calculations within a self-consistent Born approximation
• Many-body instability of Coulomb interacting bilayer graphene: RG approach
• Pseudospin Magnetism in Graphene
• Quantum Anomalous Hall State in Bilayer Graphene
• Phase diagram for the $\nu =0$ quantum Hall state in monolayer graphene
• Spontaneous symmetry breaking and Lifshitz transition in bilayer graphene
• Electron-electron interactions in graphene bilayers
• Spontaneously gapped ground state in suspended bilayer graphene
• Symmetry breaking of the zero energy Landau level in bilayer graphene
• Local Compressibility Measurements of Correlated States in Suspended Bilayer Graphene
• Theory of carrier transport in bilayer graphene
• Low density ferromagnetism in biased bilayer graphene
• Lattice Theory of Pseudospin Ferromagnetism in Bilayer Graphene: Competing Orders and Interaction Induced Quantum Hall States
• Minimal conductivity in bilayer graphene
• Fabrication of Graphene p-n-p Junctions with Contactless Top Gates
• Interacting fermions on the honeycomb bilayer: from weak to strong coupling
• Canted antiferromagnetic phase of the $\nu =0$ quantum Hall state in bilayer graphene
• Notes on the minimal longitudinal dc conductivity of perfect bilayer graphene
• Lithography-free Fabrication of High Quality Substrate-supported and Freestanding Graphene devices
• Antiferromagnetic state in bilayer graphene
• Distinguishing Spontaneous Quantum Hall States in Graphene Bilayers
• Disorder by order in graphene
• Finite Conductivity Minimum in Bilayer Graphene without Charge Inhomogeneities
• Hund's Rules for the N=0 Landau Levels of Trilayer Graphene
• Inhomogenous electronic structure, transport gap, and percolation threshold in disordered bilayer graphene
• Ordered Loop Current States in Bilayer Graphene
• Effect of the band structure topology on the minimal conductivity for bilayer graphene with symmetry breaking
• Optical and transport gaps in gated bilayer graphene
• Flavor Symmetry and Competing Orders in Bilayer Graphene

Cited by in corpus (101)

• Van der Waals heterostructures
• The electronic properties of bilayer graphene
• Dirac materials
• Electronic properties of graphene-based bilayer systems
• Superlattice-induced insulating states and valley-protected orbits in twisted bilayer graphene
• Valley Chern Numbers and Boundary Modes in Gapped Bilayer Graphene
• Isospin magnetism and spin-triplet superconductivity in Bernal bilayer graphene
• Chiral d-wave superconductivity in doped graphene
• How close can one approach the Dirac point in graphene experimentally?
• Accurate tight-binding and continuum models for the $\pi$ bands of bilayer graphene
• Cascade of isospin phase transitions in Bernal bilayer graphene at zero magnetic field
• Direct measurement of discrete valley and orbital quantum numbers in a multicomponent quantum Hall system
• Intrinsic plasmons in 2D Dirac materials
• Electronic multicriticality in bilayer graphene
• Superconductivity and correlated phases in non-twisted bilayer and trilayer graphene
• Stacking boundaries and transport in bilayer graphene
• Perfect Valley Filter in Topological Domain Wall
• Antiferromagnetism in the Hubbard Model on the Bernal-stacked Honeycomb Bilayer
• Fermions on bilayer graphene: symmetry breaking for B=0 and nu=0
• Interacting electrons on trilayer honeycomb lattices
• Gapped broken symmetry states in ABC trilayer graphene
• Spatially-indirect Exciton Condensate Phases in Double Bilayer Graphene
• Competing Ordered States in Bilayer Graphene
• A Family of Finite-Temperature Electronic Phase Transitions in Graphene Multilayers
• Broken Symmetry Quantum Hall States in Dual Gated ABA Trilayer Graphene
• Ordered Loop Current States in Bilayer Graphene
• Many-body effects in twisted bilayer graphene at low twist angles
• Topologically confined states at corrugations of gated bilayer graphene
• Ferroelectric and anomalous quantum Hall states in bare rhombohedral trilayer graphene
• Instabilities on graphene's honeycomb lattice with electron-phonon interactions
• Spin Symmetry of the Bilayer Graphene Groundstate
• Spontaneous Layer-Pseudospin Domain Walls in Bilayer Graphene
• Gapped phase in AA stacked bilayer graphene
• Superconductivity on the brink of spin-charge order in doped honeycomb bilayer
• Electronic transition from graphite to graphene via controlled movement of the top layer with scanning tunneling microscopy
• Distinct Competing Ordered ν=2 States in Bilayer Graphene
• Persistent Current States in Bilayer Graphene
• Quantum critical behavior of two-dimensional Fermi systems with quadratic band touching
• Classification of massive and gapless phases in bilayer graphene
• Direct Visualization of Native Defects in Graphite and Their Effect on the Electronic Properties of Bernal-Stacked Bilayer Graphene
• Excitonic and superconducting orders from repulsive interaction on the doped honeycomb bilayer
• Fabrication of ballistic suspended graphene with local-gating
• Metallic Phase and Temperature Dependence of the $\nu =0$ Quantum Hall State in Bilayer Graphene
• Interaction-induced insulating state in thick multilayer graphene
• On the coexistence of antiferromagnetism and d + i d superconducting correlations in the graphene bilayer
• Interaction dominated transport and Coulomb drag in bilayer graphene
• Energy gaps and layer polarization of integer and fractional quantum Hall states in bilayer graphene
• Coexistence and competition of nematic and gapped states in bilayer graphene
• Quantum transport in double-gated graphene devices
• Anomalous Dirac point transport due to extended defects in bilayer graphene
• Lifshitz transition and thermoelectric properties of bilayer graphene
• Layer Antiferromagnetic State in Bilayer Graphene : A First-Principle Investigation
• Gross-Neveu-Heisenberg criticality from competing nematic and antiferromagnetic orders in bilayer graphene
• Spontaneous Chiral Symmetry Breaking in Bilayer Graphene
• Exchange interaction, disorder, and stacking faults in rhombohedral graphene multilayers
• Valley-Selective Topological Ordered States in Irradiated Bilayer Graphene
• Half Metallic Bilayer Graphene
• Interaction-induced insulating states in multilayer graphenes
• Stacking Textures and Singularities in Bilayer Graphene
• Interplay between topological protected valley and quantum Hall edge transport
• Electronic Ground State in Bilayer Graphene with Realistic Coulomb Interactions
• Phase diagram of a graphene bilayer in the zero-energy Landau level
• Triplet superconductivity and spin density wave in biased AB bilayer graphene
• Theory of intrinsic acoustic plasmons in twisted bilayer graphene
• Quantum multicriticality of bilayer graphene in the presence of a tunable energy gap
• Noncollinear magnetism and half-metallicity in biased bilayer zigzag graphene nanoribbons
• Critical Behavior of Four-Terminal Conductance of Bilayer Graphene Domain Walls
• Possible Broken Inversion and Time-Reversal Symmetry State of Electrons in Bilayer Graphene
• Half-metal and other fractional metal phases in doped AB bilayer graphene
• Soluble Fermionic Quantum Critical Point in Two Dimensions
• Layer-Dependent Quantum Anomalous Hall Effect in Rhombohedral Graphene
• Quarter Metal Superconductivity
• Spin-valley Hall transport induced by spontaneous symmetry breaking in half-filled zero Landau level of bilayer graphene
• Valley polarization, magnetization, and superconductivity in bilayer graphene near the van Hove singularity
• Landau Levels of Bilayer Graphene in a WSe${}_2$/Bilayer Graphene van der Waals Heterostructure
• Ordered-Current State of Electrons in Bilayer Graphene
• Independently Tunable Flat Bands and Correlations in a Graphene Double Moiré System
• Absence of broken inversion symmetry phase of electrons in bilayer graphene under charge density fluctuations
• Disorder-tuned selection of order in bilayer graphene
• Trigonal warping, pseudodiffusive transport, and finite-system version of the Lifshitz transition in magnetoconductance of bilayer-graphene Corbino disks
• Contact resistance at planar metal contacts on bilayer graphene and effects of molecular insertion layers
• Realization of graphene logics in an exciton-enhanced insulating phase
• Superconductivity and spin density wave in AA stacked bilayer graphene
• Electrically controllable magnetic order in the bilayer Hubbard model on honeycomb lattice --- a determinant quantum Monte Carlo study
• Minimal conductivity and signatures of quantum criticality in ballistic graphene bilayer
• Conductivity scaling and the effects of symmetry-breaking terms in bilayer graphene Hamiltonian
• Magnetoconductance of the Corbino disk in graphene: Chiral tunneling and quantum interference in the bilayer case
• Real-space study of zero-field correlation in tetralayer rhombohedral graphene
• Influence of hopping selfenergy and quasiparticle degradation on the antiferromagnetic ordering in the bilayer honeycomb Hubbard model
• Electron-electron interactions in non-equilibrium bilayer graphene
• Broken symmetry states in bilayer graphene in electric and in-plane magnetic fields
• Spin-Polarized-Current State of Electrons in Bilayer Graphene
• Spontaneous charge-ordered state in Bernal-stacked bilayer graphene
• Temperature-induced phase transitions in the quantum Hall magnet of bilayer graphene
• Current orderings of interacting electrons in bilayer graphene
• Infrared spectroscopy of phase transitions in the lowest Landau levels of bilayer graphene
• Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene
• Phase boundary of spin-polarized-current state of electrons in bilayer graphene
• Ordered states of undoped AB bilayer graphene: bias induced cascade of transitions
• Stabilization of sliding ferroelectricity through exciton condensation
• Binding and spontaneous condensation of excitons in narrow-gap carbon nanotubes