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Gate-Defined Graphene Quantum Point Contact in the Quantum Hall Regime
- Source :
- Phys. Rev. Lett. 107 036602 (2011)
- Publication Year :
- 2010
-
Abstract
- We investigate transport in a gate-defined graphene quantum point contact in the quantum Hall regime. Edge states confined to the interface of p and n regions in the graphene sheet are controllably brought together from opposite sides of the sample and allowed to mix in this split-gate geometry. Among the expected quantum Hall features, an unexpected additional plateau at 0.5 h/e^2 is observed. We propose that chaotic mixing of edge channels gives rise to the extra plateau.<br />Comment: related papers at http://marcuslab.harvard.edu
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 107 036602 (2011)
- Publication Type :
- Report
- Accession number :
- edsarx.1010.1919
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.107.036602