Transconductance fluctuations as a probe for interaction induced quantum Hall states in graphene
arXiv:1204.4177 · doi:10.1103/PhysRevLett.109.056602
Abstract
Transport measurements normally provide a macroscopic, averaged view of the sample, so that disorder prevents the observation of fragile interaction induced states. Here, we demonstrate that transconductance fluctuations in a graphene field effect transistor reflect charge localization phenomena on the nanometer scale due to the formation of a dot network which forms near incompressible quantum states. These fluctuations give access to fragile broken-symmetry and fractional quantum Hall states even though these states remain hidden in conventional magnetotransport quantities.
6 pages, 3 figures
References in corpus (23)
- Two-Dimensional Gas of Massless Dirac Fermions in Graphene
- Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
- Boron nitride substrates for high-quality graphene electronics
- Observation of the Fractional Quantum Hall Effect in Graphene
- Fractional quantum Hall effect and insulating phase of Dirac electrons in graphene
- Landau Level Splitting in Graphene in High Magnetic Fields
- Multicomponent fractional quantum Hall effect in graphene
- Observation of Landau levels of Dirac fermions in graphite
- The zero-energy state in graphene in a high magnetic field
- The microscopic nature of localization in the quantum Hall effect
- Electron interactions in graphene in a strong magnetic field
- Electrostatic confinement of electrons in an integrable graphene quantum dot
- Disorder and Electronic Transport in Graphene
- Evolution of Microscopic Localization in Graphene in a Magnetic Field from Scattering Resonances to Quantum Dots
- Theory of the Magnetic-Field-Induced Insulator in Neutral Graphene
- Spontaneous Symmetry Breaking and Quantum Hall Effect in Graphene
- SU(4) composite fermions in graphene: New fractional quantum Hall states
- The nature of localization in graphene under quantum Hall conditions
- Quantum Hall fluctuations and evidence for charging in the quantum Hall effect
- Edge states, mass and spin gaps, and quantum Hall effect in graphene
- Probing Charging and Localization in the Quantum Hall Regime by Graphene pnp Junctions
- Transport Detection of Quantum Hall Fluctuations in Graphene
- Theoretical expectations for a fractional quantum Hall effect in graphene
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- Interaction phenomena in graphene seen through quantum capacitance
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- Tunable quantum anomalous Hall octet driven by orbital magnetism in bilayer graphene
- Fractional and integer quantum Hall effects in the zeroth Landau level in graphene
- Recent Experimental Progress of Fractional Quantum Hall Effect: 5/2 Filling State and Graphene
- Topological Phases in the Zeroth Landau Level of Bilayer Graphene
- Characterizing wave functions in graphene nanodevices: electronic transport through ultrashort graphene constrictions on a boron nitride substrate
- Unconventional fractional quantum Hall states and Wigner crystallization in suspended Corbino graphene
- Twistronics in graphene-based van der Waals structures
- Ferroelectric and anomalous quantum Hall states in bare rhombohedral trilayer graphene
- Probing the tunable multi-cone bandstructure in Bernal bilayer graphene
- Nonequilibrium mesoscopic conductance fluctuations as the origin of 1/f noise in epitaxial graphene
- Graphene disk in a solenoid magnetic potential: Aharonov-Bohm effect without a two-slit-like setup
- Interplay between topological protected valley and quantum Hall edge transport
- Broken-Symmetry Quantum Hall States in Twisted Bilayer Graphene
- Equilibration of quantum hall edge states and its conductance fluctuations in graphene p-n junctions
- Signatures of single quantum dots in graphene nanoribbons within the quantum Hall regime
- Quantum Hall ferroelectric helix in bilayer graphene