Single-Electron Transport in Ropes of Carbon Nanotubes

Author:

Bockrath Marc1,Cobden David H.1,McEuen Paul L.1,Chopra Nasreen G.1,Zettl A.1,Thess Andreas2,Smalley R. E.2

Affiliation:

1. M. Bockrath, D. H. Cobden, P. L. McEuen, N. G. Chopra, A. Zettl, Molecular Design Institute, Lawrence Berkeley National Laboratory, and Department of Physics, University of California, Berkeley, CA 94720, USA.

2. A. Thess and R. E. Smalley, Center for Nanoscale Science and Technology, Rice Quantum Institute, and Departments of Chemistry and Physics, Mail Stop 100, Rice University, Post Office Box B1892, Houston, TX 77251, USA.

Abstract

The electrical properties of individual bundles, or “ropes,” of single-walled carbon nanotubes have been measured. Below about 10 kelvin, the low-bias conductance was suppressed for voltages less than a few millivolts. In addition, dramatic peaks were observed in the conductance as a function of a gate voltage that modulated the number of electrons in the rope. These results are interpreted in terms of single-electron charging and resonant tunneling through the quantized energy levels of the nanotubes composing the rope.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference25 articles.

1. For a review see H. Grabert and M. H. Devoret Eds. Single Charge Tunneling (Plenum New York 1991); M. A. Kastner Phys. Today 46 24 (January 1993); L. P. Kouwenhoven and P. L. McEuen in Nanoscience and Technology G. Timp Ed. (AIP Press New York in press).

2. Helical microtubules of graphitic carbon

3. for a recent review, see Ebbesen T. W., Phys. Today 49, 26 (June 1996).

4. Electronic structure of chiral graphene tubules

5. New one-dimensional conductors: Graphitic microtubules

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