Coherent electronic transport through graphene constrictions: Subwavelength regime and optical analogy

Pierre Darancet, Valerio Olevano, Didier Mayou

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

Nanoelectronic devices smaller than the electron wavelength can be achieved in graphene with current lithography techniques. Here we show that the electronic quantum transport of graphene subwavelength nanodevices presents deep analogies with subwavelength optics. We introduce the concept of electronic diffraction barrier to represent the effect of constrictions and the rich transport phenomena of a variety of nanodevices. Results are presented for Bethe and Kirchhoff diffraction in graphene slits and Fabry-Perot interference oscillations in nanoribbons. The same concept applies to graphene quantum dots and gives new insight into recent experiments in these systems.

Original languageEnglish (US)
Article number136803
JournalPhysical review letters
Volume102
Issue number13
DOIs
StatePublished - Mar 30 2009

ASJC Scopus subject areas

  • General Physics and Astronomy

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