Conductivity and Atomic Structure of Isolated Multiwalled Carbon Nanotubes
PARIS 6 UNIV (FRANCE) LAB DE PHYSIQUE DES SOLIDES
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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 exhibits a pronounced maximum at 0.6 K and strong positive magnetoresistance.
- Solid State Physics