Conductivity and Atomic Structure of Isolated Multiwalled Carbon Nanotubes

Details Conductivity and Atomic Structure of Isolated Multiwalled Carbon Nanotubes Conductivity and Atomic Structure of Isolated Multiwalled Carbon Nanotubes

1997-10-30

arxiv.org/abs/cond-mat/9710331v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 eps figures

Scientific paper

10.1209/epl/i1998-00324-1

We report associated high resolution transmission electron microscopy (HRTEM) and transport measurements on a series of isolated multiwalled carbon nanotubes. HRTEM observations, by revealing relevant structural features of the tubes, shed some light on the variety of observed transport behaviors, from semiconducting to quasi-metallic type. Non Ohmic behavior is observed for certain samples which exhibit "bamboo like" structural defects. The resistance of the most conducting sample, measured down to 20 mK, exhibits a pronounced maximum at 0.6 K and strong positive magnetoresistance.

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