Large-Scale electronic transport calculations of finite-length carbon nanotubes bridged between graphene electrodes with lithium-intercalated contact

Mari Ohfuchi, Taisuke Ozaki, Chioko Kaneta

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We perform density-functional-theory-based large-scale calculations of finite-length carbon nanotubes with caps bridged between grapheme electrodes. The electronic transport properties vary with the length of the nanotubes and the contact structure. Despite the use of thin nanotubes expected to show n-type behavior, the Fermi level of the shorter nanotubes is uniformly pinned to the cap state, forming a large conduction gap. Although the longer nanotubes still have a medium conduction gap after forming a Schottky-like contact, the lithium intercalation in the contact area brings about a good ohmic property due to not only doping but also the orbital hybridization.

Original languageEnglish
Article number095101
JournalApplied Physics Express
Volume4
Issue number9
DOIs
Publication statusPublished - 2011 Sep 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Large-Scale electronic transport calculations of finite-length carbon nanotubes bridged between graphene electrodes with lithium-intercalated contact'. Together they form a unique fingerprint.

Cite this