Excitation spectroscopy of two-electron shell structures in carbon nanotube quantum dots in magnetic fields
Authors:
- 9 August 2005
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 87 (7) , 073103
Abstract
Single-quantum dots have been fabricated in an individual single-wall carbon nanotube, and the single-electron-transport measurements have been carried out at 40 mK. Coulomb diamonds showed an alternate change of the diamond size, an even-odd effect, indicating the two-electron shell filling. An excitation spectroscopy in which a Coulomb oscillation peak was measured in magnetic fields with a large source-drain bias voltage revealed the Zeeman splitting of single-particle states. The results suggest an important step for preparation of the spin two-level system.Keywords
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