Quantized Landau level spectrum and its density dependence

Abstract

Scanning tunneling microscopy and spectroscopy in magnetic field was used to study Landau quantization in graphene and its dependence on charge carrier density. Measurements were carried out on exfoliated graphene samples deposited on a chlorinated SiO2 thermal oxide which allowed observing the Landau level sequences characteristic of single layer graphene while tuning the density through the Si backgate. Upon changing the carrier density we find abrupt jumps in the Fermi level after each Landau level is filled. Moreover, the Landau level spacing shows a marked increase at low doping levels, consistent with an interaction-induced renormalization of the Dirac cone.

11 pages, 4 figures

References in corpus (13)

• The electronic properties of graphene
• Ultrahigh electron mobility in suspended graphene
• Suspended Graphene: a bridge to the Dirac point
• Atomic Structure of Graphene on SiO2
• High-Resolution Scanning Tunneling Microscopy Imaging of Mesoscopic Graphene Sheets on an Insulating Surface
• Infrared spectroscopy of Landau levels in graphene
• Scanning Tunneling Spectroscopy of Graphene on Graphite
• Intrinsic and extrinsic corrugation of monolayer graphene deposited on SiO2
• Spatially resolved spectroscopy of monolayer graphene on SiO2
• Density of states and zero Landau level probed through capacitance of graphene
• Evidence for Strain-Induced Local Conductance Modulations in Single-Layer Graphene on SiO2
• Graphene: A Pseudochiral Fermi Liquid
• High Resolution Spectroscopy of Two-Dimensional Electron Systems

Cited by in corpus (60)

• Graphene Bilayers with a Twist
• Dirac cones reshaped by interaction effects in suspended graphene
• Dirac Fermions in Solids - from High Tc cuprates and Graphene to Topological Insulators and Weyl Semimetals
• Novel effects of strains in graphene and other two dimensional materials
• Electronic properties of graphene: a perspective from scanning tunneling microscopy and magneto-transport
• Colloquium: Graphene spectroscopy
• Space dependent Fermi velocity in strained graphene
• Visualizing Broken Symmetry and Topological Defects in a Quantum Hall Ferromagnet
• Observation of an anisotropic Dirac cone reshaping and ferrimagnetic spin polarization in an organic conductor
• Double-layer graphene and topological insulator thin-film plasmons
• Imaging tunable quantum Hall broken-symmetry orders in graphene
• Many-body effects in van der Waals-Casimir interaction between graphene layers
• MoS2: a Choice Substrate for Accessing and Tuning the Electronic Properties of Graphene
• Acoustic plasmons and "soundarons" in graphene on a metal gate
• Screening Charged Impurities and Lifting the Orbital Degeneracy in Graphene by Populating Landau Levels
• Charge Puddles in Graphene Near the Dirac Point
• Effective field theory, three-loop perturbative expansion, and their experimental implications in graphene many-body effects
• Geometrical and topological aspects of graphene and related materials
• Theory of Coulomb drag for massless Dirac fermions
• Magnetoelectronic properties of graphene dressed by a high-frequency field
• Flat band carrier confinement in magic-angle twisted bilayer graphene
• Graphene superlattice with periodically modulated Dirac gap
• Local and Global Screening Properties of Graphene Revealed through Landau Level Spectroscopy
• Unraveling quantum Hall breakdown in bilayer graphene with scanning gate microscopy
• Velocity renormalization and anomalous quasiparticle dispersion in extrinsic graphene
• Scanning Tunneling Microscopy and Spectroscopy of Graphene on Insulating Substrates
• Spin g-factor due to electronic interactions in graphene
• Impact of Many-Body Effects on Landau Levels in Graphene
• Localization of massless Dirac particles via spatial modulations of the Fermi velocity
• Electronic ground state properties of strained graphene
• Realizing Universal Edge Properties in Graphene Fractional Quantum Hall Liquids
• Coulomb interaction and magnetic catalysis in the quantum Hall effect in graphene
• A low-temperature scanning tunneling microscope capable of microscopy and spectroscopy in a Bitter magnet at up to 34 T
• Spatial Charge Inhomogeneity and Defect States in Topological Dirac Semimetal Thin Films
• Probing electron-electron interaction in quantum Hall systems with scanning tunneling spectroscopy
• Perfect valley filter controlled by Fermi velocity modulation in graphene
• Quantum-Dot Assisted Spectroscopy of Degeneracy-Lifted Landau Levels in Graphene
• Straintronics beyond homogeneous deformation
• The influence of a weak magnetic field in the Renormalization-Group functions of (2+1)-dimensional Dirac systems
• Absence of edge reconstruction for quantum Hall edge channels in graphene devices
• Quantum capacitance and compressibility of graphene: The role of Coulomb interactions
• Plasmons at the LaAlO${}_3$/SrTiO${}_3$ interface and Graphene-LaAlO${}_3$/SrTiO${}_3$ double layer
• Landau level transitions indoped graphene in a time dependent magnetic field
• Doped carbon nanotubes as a model system of biased graphene
• Fingerprints of a position-dependent Fermi velocity on scanning tunnelling spectra of strained graphene
• Mapping quantum Hall edge states in graphene by scanning tunneling microscopy
• Many-body effects of Coulomb interaction on Landau levels in graphene
• Density of states of relativistic and nonrelativistic two-dimensional electron gases in a uniform magnetic and Aharonov-Bohm fields
• Local density of states in two-dimensional topological superconductors under a magnetic field: signature of an exterior Majorana bound state
• Dirac fermions in graphene and analogues: magnetic field and topological properties
• Impact of novel electron-phonon coupling mechanisms on valley physics in two-dimensional materials
• Tunneling Spectroscopy of Graphene using Planar Pb Probes
• Electron trapping in graphene quantum dots with magnetic flux
• Spin polarization dependence of quasiparticle properties in graphene
• Many-body filling-factor dependent renormalization of Fermi velocity in graphene in strong magnetic field
• Landau levels in a topological insulator
• Many-body renormalization of Landau levels in graphene due to screened Coulomb interaction
• Probing the Electronic Structure of Graphene Near and Far from the Fermi Level via Planar Tunneling Spectroscopy
• Tunable Dirac points and zero-energy modes in periodic curved graphene superlattices
• Evidence for incompressible states in a metal graphene tunnel junction in high magnetic field