Single-Electron Transport in Ropes of Carbon Nanotubes.

Bockrath, M; Cobden, DH; McEuen, PL; Chopra, NG; Zettl, A; Thess, A; Smalley, RE · Science · 1997

basic_science · Level V

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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.