Carbon Nanotube Single-Electron Transistors at Room Temperature
Abstract
Room-temperature single-electron transistors are realized within individual metallic single-wall carbon nanotube molecules. The devices feature a short (down to ∼20 nanometers) nanotube section that is created by inducing local barriers into the tube with an atomic force microscope. Coulomb charging is observed at room temperature, with an addition energy of 120 millielectron volts, which substantially exceeds the thermal energy. At low temperatures, we resolve the quantum energy levels corresponding to the small island. We observe unconventional power-law dependencies in the measured transport properties for which we suggest a resonant tunneling Luttinger-liquid mechanism.
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We thank R. E. Smalley and co-workers for providing the carbon nanotube material; A. Bachtold, M. P. A. Fisher, L. Balents, P. Hadley, M. Thorwart, A. Braggio, and Yu. V. Nazarov for discussions; and B. van den Enden for technical assistance. Supported by the Dutch Foundation for Fundamental Research on Matter (FOM) and the European Community SATURN project.
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Published In
Science
Volume 293 | Issue 5527
6 July 2001
6 July 2001
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Received: 20 April 2001
Accepted: 23 May 2001
Published in print: 6 July 2001
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- Henk W. Ch. Postma et al.
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