Electrical conductance and breakdown in individual CNx multiwalled nanotubes

Burch, H. J. , Davies, J. A., Brown, E., Hao, L., Contera, S. A., Grobert, N. and Ryan, J.F. (2006) Electrical conductance and breakdown in individual CNx multiwalled nanotubes. Applied Physics Letters, 89(14), 143110. (doi: 10.1063/1.2358308)

Abstract

Doping of carbon nanotubes with nitrogen during growth strongly modifies their electronic structure through nnn-type doping. This provides the possibility of producing nanotubes with high conductances, independent of tube chirality. To date, electrical measurements on individual nitrogen-doped multiwalled nanotubes (CNxCNxCNxMWNTs) have reported surprisingly low conductances(∼0.01G0)(∼0.01G0)(∼0.01G0). Here the authors present high conductance(1.0±0.3G0(1.0±0.3G0(1.0±0.3G0) measurements at low bias for individual CNxCNxCNxMWNTs.Conductance increases linearly with voltage at a rate of 0.7±0.2G0∕V0.7±0.2G0∕V0.7±0.2G0∕V until the threshold for electrical breakdown is reached. Discrete current steps of 20±10μA20±10μA20±10μA are then observed.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Hamnett, Dr Hilary
• Authors: Burch, H. J., Davies, J. A., Brown, E., Hao, L., Contera, S. A., Grobert, N., and Ryan, J.F.
• College/School: College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
• Journal Name: Applied Physics Letters
• Publisher: AIP Publishing
• ISSN: 0003-6951
• ISSN (Online): 1077-3118