Aharonov-Bohm effect in a side-gated graphene ring

Abstract

We investigate the magnetoresistance of a side-gated ring structure etched out of single-layer graphene. We observe Aharonov-Bohm oscillations with about 5% visibility. We are able to change the relative phases of the wave functions in the interfering paths and induce phase jumps of pi in the Aharonov-Bohm oscillations by changing the voltage applied to the side gate or the back gate. The observed data can be well interpreted within existing models for 'dirty metals' giving a phase coherence length of the order of 1 micrometer at a temperature of 500mK.

References in corpus (16)

• Electric Field Effect in Atomically Thin Carbon Films
• The Raman Fingerprint of Graphene
• Energy Band Gap Engineering of Graphene Nanoribbons
• Chaotic Dirac billiard in graphene quantum dots
• Graphene Nano-Ribbon Electronics
• Phase Coherent Transport of Charges in Graphene Quantum Billiard
• Weak localisation in graphene flakes
• Energy gaps in etched graphene nanoribbons
• Aharonov-Bohm effect and broken valley-degeneracy in graphene rings
• Tunable Coulomb blockade in nanostructured graphene
• Quantum dot behavior in graphene nanoconstrictions
• Observation of excited states in a graphene quantum dot
• Transport gap in side-gated graphene constrictions
• Transport through graphene double dots
• Local gating of a graphene Hall bar by graphene side gates
• Phase coherent transport in a side-gated mesoscopic graphite wire

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