Electronic transport of a carbon nanotube quantum dot in different coupling regimes

Hideyuki Maki, Yoichi Ishiwata, Masaki Suzuki, Koji Ishibashi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Electronic transport properties of weakly and strongly coupled carbon nanotube quantum dots are investigated using one device. After transition from a weakly coupled dot to a strongly coupled dot, both height increases and broadening of Coulomb peaks are observed due to increasing tunneling rate. From the measurements of Coulomb diamonds, twofold degeneracy is observed for a weakly coupled dot, and twofold and fourfold degeneracy is observed for a strongly coupled dot. The excitation lines due to the confined levels disappear after the transition to strong coupling.

Original languageEnglish
Pages (from-to)4269-4271
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number6 A
DOIs
Publication statusPublished - 2005 Jun 1
Externally publishedYes

Keywords

  • Carbon nanotube
  • Coulomb diamond
  • Coulomb oscillation
  • Coupling
  • Electronic transport
  • Quantum dot
  • Spin degeneracy
  • Subband degeneracy

ASJC Scopus subject areas

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

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