✦ LIBER ✦

Single and coupled quantum dots in single-wall carbon nanotubes

✍ Scribed by Koji Ishibashi; Masaki Suzuki; Satoshi Moriyama; Tetsuya Ida; Yoshinobu Aoyagi

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 611 KB
Volume: 31
Category: Article
ISSN: 0749-6036
DOI: 10.1006/spmi.2002.1035

No coin nor oath required. For personal study only.

✦ Synopsis

We have fabricated single and coupled quantum dots in single-wall carbon nanotubes, and measured their electrical transport at low temperatures. The charging energy for single quantum dots seemed to depend on the gap between metallic contacts, and could be larger than room temperature for the smallest sample. Coupled quantum dots could be successfully fabricated by depositing a narrow SiO 2 layer between source-drain contacts. The experimental observations of the stochastic Coulomb blockade and the negative differential conductance support the formation of the coupled quantum dots. The barrier formation in single and coupled quantum dots is also discussed.

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