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

doi:10.1126/science.1096647

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 journal › Article › peer-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 language	English (US)
Pages (from-to)	1132-1134
Number of pages	3
Journal	Science
Volume	304
Issue number	5674
DOIs	https://doi.org/10.1126/science.1096647
State	Published - May 21 2004

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AU - Goldbart, Paul M.

AU - Bezryadin, Alexey

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

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