h/e magnetic flux modulation of the energy gap in nanotube quantum dots

Ulas C. Coskun, Tzu Chieh Wei, Smitha Vishveshwara, Paul M. Goldbart, Alexey Bezryadin

Research output: Contribution to journalArticlepeer-review

Abstract

We report experiments on quantum dot single-electron-tunneling (SET) transistors made from short multiwall nanotubes and threaded by magnetic flux. Such systems allow us to probe the electronic energy spectrum of the nanotube and its dependence on the magnetic field. Evidence is provided for the interconversion between gapped (semiconducting) and ungapped (metallic) states. Our tubes exhibit h/e-period magnetic flux dependence, in agreement with simple tight-binding calculations.

Original languageEnglish (US)
Pages (from-to)1132-1134
Number of pages3
JournalScience
Volume304
Issue number5674
DOIs
StatePublished - May 21 2004

ASJC Scopus subject areas

  • General

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