Conductivity and atomic structure of isolated multiwalled carbon nanotubes
Laboratoire de Physique des Solides, Associé au CNRS, Bât. 510, Université Paris-Sud, 91405, Orsay, France
2 Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences - Chernogolovka 142432 Moscow Region, Russia
3 Laboratoire Aimé Cotton (UPR CNRS 3321), Bât. 505 Université Paris-Sud, 91405, Orsay, France
Accepted: 13 May 1998
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.
PACS: 85.40.-e – Microelectronics: LSI, VLSI, ULSI; integrated circuit fabrication technology / 61.46.+w – Clusters, nanoparticles, and nanocrystalline materials
© EDP Sciences, 1998