Aharonov-Bohm effect in an electron-hole graphene ring system

Abstract

Aharonov-Bohm oscillations are observed in a graphene quantum ring with a top gate covering one arm of the ring. As graphene is a gapless semiconductor this geometry allows to study not only the quantum interference of electrons with electrons or holes with holes but also the unique situation of quantum interference between electrons and holes. The period and amplitude of the observed Aharonov-Bohm oscillations are independent of the sign of the applied gate voltage showing the equivalence between unipolar and dipolar interference.

4 pages, 3 figures

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Cited by in corpus (20)

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• Lattice thermal conductivity of graphene nanostructures
• Aharonov-Bohm effect and giant magnetoresistance in graphene nanoribbon rings
• Lorentz force effects for graphene Aharonov-Bohm interferometers
• Transmission of phase information between electrons and holes in graphene
• Transport of Massless Dirac Fermions in Non-topological Type Edge States
• Gate-defined electron interferometer in bilayer graphene
• Fano resonances in hexagonal zigzag graphene rings under external magnetic flux
• Magnetic edge states in Aharonov-Bohm graphene quantum rings
• Suppression of decoherence in a graphene monolayer ring
• Dirac electrons in quantum rings
• Aharonov-Bohm conductance oscillations and current equilibration in local n - p junctions in graphene
• Electronic Properties of $\alpha -{\mathcal{T}}_3$ Quantum Dots in Magnetic Fields
• Disappearence of the Aharonov-Bohm Effect for Interacting Electrons in a ZnO Quantum Ring
• Transport and quantum coherence in graphene rings: Aharonov-Bohm oscillations, Klein tunneling and particle localization
• Four-band effective square lattice model for Bernal-stacked bilayer graphene
• Geometric Phases for Classical and Quantum Dynamics: Hannay angle and Berry Phase for Loops on a Torus
• Interplay between Aharonov-Bohm interference and parity selective tunneling in zigzag graphene nanoribbon rings