Zero Landau Level in Folded Graphene Nanoribbons

E. Prada, P. San-Jose, and L. Brey
Phys. Rev. Lett. 105, 106802 – Published 1 September 2010
PDFHTMLExport Citation

Abstract

Graphene nanoribbons can be folded into a double layer system keeping the two layers decoupled. In the quantum Hall regime folds behave as a new type of Hall bar edge. We show that the symmetry properties of the zero Landau level in metallic nanoribbons dictate that the zero energy edge states traversing a fold are perfectly transmitted onto the opposite layer. This result is valid irrespective of fold geometry, magnetic field strength, and crystallographic orientation of the nanoribbon. Backscattering suppression on the N=0 Hall plateau is ultimately due to the orthogonality of forward and backward channels, much like in the Klein paradox.

  • Figure
  • Figure
  • Figure
  • Received 26 March 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.106802

© 2010 The American Physical Society

Authors & Affiliations

E. Prada1, P. San-Jose2, and L. Brey1

  • 1Instituto de Ciencia de Materiales de Madrid (CSIC), Cantoblanco, 28049 Madrid, Spain
  • 2Instituto de Estructura de la Materia (CSIC), Serrano 123, 28006 Madrid, Spain

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 105, Iss. 10 — 3 September 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×