Mode-matching approach to current blocking effect in graphene nanoribbons

Hai Yao Deng, Katsunori Wakabayashi, Chi Hang Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

Zigzag graphene nanoribbon (ZGNR) p-n junctions display parity-dependent transport on the number of zigzag chains. We revisit this phenomenon using the mode-matching method and derive analytical solutions for the transmission probability. It is pointed out that the randomness of the interface tilting destroys the parity effect if the spread of the tilting parameter is larger than the lattice constant. We discuss the origin of the parity effect in connection with the lattice symmetry. Junctions with bearded ZGNRs are shown to strongly suppress electron transmission.
Original languageEnglish
Article number104707
JournalJournal of the Physical Society of Japan
Volume82
Issue number10
DOIs
Publication statusPublished - 1 Oct 2013

Keywords

  • Edge modes
  • Graphene nanoribbon
  • Mode-matching method

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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