Joule heating induced negative differential resistance in free standing metallic carbon nanotubes

Abstract

The features of the $IV$ characteristics of metallic carbon nanotubes (m-NTs) in different experimental setups are studied using semi-classical Boltzmann transport equation together with the heat dissipation equation to account for significant thermal effects at high electric bias. Our model predicts that the shape of the m-NT characteristics is basically controlled by heat removal mechanisms. In particular we show that the onset of negative differential resistance in free standing nanotubes finds its origins in strong transport nonlinearities associated with poor heat removal unlike in substrate-supported nanotubes.

arXiv comment3 pages, 3 figures

References in corpus (6)

• High-Field Electrical Transport in Single-Wall Carbon Nanotubes
• Electron-Phonon Scattering in Metallic Single-Walled Carbon Nanotubes
• High-Field, Quasi-Ballistic Transport in Short Carbon Nanotubes
• Negative Differential Conductance and Hot Phonons in Suspended Nanotube Molecular Wires
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