title: Puddle-Induced Resistance Oscillations in the Breakdown of the Graphene Quantum Hall Effect.
abstract: We report on the stability of the quantum Hall plateau in wide Hall bars made from a chemically gated graphene film grown on SiC. The ν=2 quantized plateau appears from fields B≃5  T and persists up to B≃80  T. At high current density, in the breakdown regime, the longitudinal resistance oscillates with a 1/B periodicity and an anomalous phase, which we relate to the presence of additional electron reservoirs. The high field experimental data suggest that these reservoirs induce a continuous increase of the carrier density up to the highest available magnetic field, thus enlarging the quantum plateaus. These in-plane inhomogeneities, in the form of high carrier density graphene pockets, modulate the quantum Hall effect breakdown and decrease the breakdown current.
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, EMFL-LNCMI, INSA, UPS, CNRS UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France.
authors.forename: M
authors.initials: M
authors.lastname: Yang
authors.affiliation: Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, 34095 Montpellier, France.
authors.forename: O
authors.initials: O
authors.lastname: Couturaud
authors.affiliation: Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, 34095 Montpellier, France.
authors.forename: W
authors.initials: W
authors.lastname: Desrat
authors.affiliation: Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, 34095 Montpellier, France.
authors.forename: C
authors.initials: C
authors.lastname: Consejo
authors.affiliation: Centre de Nanosciences et de Nanotechnologies, CNRS, Université Paris-Sud, Université Paris-Saclay, C2N Marcoussis, 91460 Marcoussis, France.|Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland.
authors.forename: D
authors.initials: D
authors.lastname: Kazazis
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden.
authors.forename: R
authors.initials: R
authors.lastname: Yakimova
authors.affiliation: Department of Physics, Chemistry and Biology, Linköping University, SE-58183 Linköping, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Syväjärvi
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, EMFL-LNCMI, INSA, UPS, CNRS UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France.
authors.forename: M
authors.initials: M
authors.lastname: Goiran
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, EMFL-LNCMI, INSA, UPS, CNRS UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France.
authors.forename: J
authors.initials: J
authors.lastname: Béard
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, EMFL-LNCMI, INSA, UPS, CNRS UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France.
authors.forename: P
authors.initials: P
authors.lastname: Frings
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, EMFL-LNCMI, INSA, UPS, CNRS UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France.
authors.forename: M
authors.initials: M
authors.lastname: Pierre
authors.affiliation: Université Grenoble Alpes, IMEP-LAHC, F-38000 Grenoble, France.|CNRS, IMEP-LAHC, F-38000 Grenoble, France.
authors.forename: A
authors.initials: A
authors.lastname: Cresti
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, EMFL-LNCMI, INSA, UPS, CNRS UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France.
authors.forename: W
authors.initials: W
authors.lastname: Escoffier
authors.affiliation: Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, 34095 Montpellier, France.
authors.forename: B
authors.initials: B
authors.lastname: Jouault