Optimized contact configuration for the study of transport phenomena in ropes of single-wall carbon nanotubes
- 21 May 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 78 (21), 3313-3315
- https://doi.org/10.1063/1.1373413
Abstract
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.Keywords
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