Copyright © (2001) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics
The study of the intrinsic transport properties of carbon nanotubes suffers from the difficulties in
fabricating noninvasive contacts. Here, we present a scheme for the investigation of transport
phenomena in metallic single-wall carbon nanotubes by means of a special four-terminal
measurement configuration. To suppress the impact of the contacts on the measured conductance in
a tube, we found a combination of top and bottom contacts to the rope of single-wall nanotubes to
be most appropriate. Our experimental findings demonstrate that a linear decrease of the sample
resistance can be observed under these circumstances without the common increase of resistance for
decreasing temperatures.
By: J. Appenzeller, R. Martel, Ph. Avouris, H. Stahl (RWTH Aachen, Germany), B. Lengeler (RWTH Aachen, Germany)
Published in: Applied Physics Letters, volume 78, (no 21), pages 3313-5 in 2001
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