Ballistic magnetotransport in graphene

Relativistic magnetotransport in graphene

We study the thermal and electric transport of a fluid of interacting Dirac fermions as they arise in single-layer graphene. We include Coulomb interactions, a dilute density of charged impurities and the presence of a magnetic field to describe both the static and the low frequency response as a function of temperature T and chemical potential μ . In the critical regime μ . T where both bands ...

Magnetotransport in high mobility epitaxial graphene

Epitaxial graphene layers grown on single-crystal SiC have large structural coherence domains and can be easily patterned into submicron structures using standard microelectronics lithography techniques. Patterned structures show two-dimensional electron gas properties with mobilities exceeding 3 m2/Vs. Magnetotransport measurements (Shubnikov–de Haas oscillations) indicate that the transport p...

Suppression of magnetotransport in strongly disordered graphene.

A tight-binding model with randomly fluctuating atomic positions is studied to discuss the effect of strong disorder in graphene. We employ a strong-disorder expansion for the transport quantities and find a diffusive behavior, where the conductivity is decreasing with increasing disorder. For sufficiently strong disorder the magnetic field drops out of the diffusion coefficient and the conduct...

Edge magnetotransport fingerprints in disordered graphene nanoribbons

Jean-Marie Poumirol,1 Alessandro Cresti,2,* Stephan Roche,3,4 Walter Escoffier,1 Michel Goiran,1 Xinran Wang,5 Xiaolin Li,5 Hongjie Dai,5 and Bertrand Raquet1 1Laboratoire National des Champs Magnétiques Intenses, INSA UPS CNRS, UPR 3228, Université de Toulouse, 143 avenue de Rangueil, 31400 Toulouse, France 2LETI, MINATEC, CEA, F38054 Grenoble, France 3INAC, SP2M, Lsim, CEA, 17 avenue des Mart...

Quantum-Critical Relativistic Magnetotransport in Graphene