Pseudo-diffusive magnetotransport in graphene
arXiv:cond-mat/0611189 · doi:10.1103/PhysRevB.75.113407
Abstract
Transport properties through wide and short ballistic graphene junctions are studied in the presence of arbitrary dopings and magnetic fields. No dependence on the magnetic field is observed at the Dirac point for any current cumulant, just as in a classical diffusive system, both in normal-graphene-normal and normal-graphene-superconductor junctions. This pseudo-diffusive regime is however extremely fragile respect to doping at finite fields. We identify the crossovers to a field-suppressed and a normal ballistic transport regime in the magnetic field - doping parameter space, and provide a physical interpretation of the phase diagram. Remarkably, pseudo-diffusive transport is recovered away from the Dirac point in resonance with Landau levels at high magnetic fields.
4+ pages, 2 figures. Minor corrections. Published version.
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- Electric Field Effect in Atomically Thin Carbon Films
- Two Dimensional Atomic Crystals
- Unconventional Integer Quantum Hall effect in graphene
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- Electron transport in disordered graphene
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Cited by in corpus (4)
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- Electronic transport in normal-conductor/graphene/normal-conductor junctions and conditions for insulating behavior at a finite charge-carrier density