Non-linear transport and heat dissipation in metallic carbon nanotubes

Abstract

We show that the local temperature dependence of thermalized electron and phonon populations along metallic carbon nanotubes is the main reason behind this non-linear transport characteristics in the high bias regime. Our model that considers optical and zone boundary phonon emission as well as absorption by charge carriers is based on the solution of the Boltzmann transport equation that assumes a local temperature along the nanotube, determined self-consistently with the heat transport equation. By using realistic transport parameters, our results not only reproduce experimental data for electronic transport, but also provide a coherent interpretation of thermal breakdown under electric stress. In particular, electron and phonon thermalization prohibits ballistic transport in short nanotubes.

4 pages, 4 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
• Electrical generation and absorption of phonons in carbon nanotubes
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• Thermal Dissipation and Variability in Electrical Breakdown of Carbon Nanotube Devices
• Inelastic Quantum Transport and Peierls-like Mechanism in Carbon Nanotubes
• Joule heating induced negative differential resistance in free standing metallic carbon nanotubes
• Effects of Bending on Raman-active Vibration Modes of Carbon Nanotubes
• High field electro-thermal transport in metallic carbon nanotubes
• Restricted Wiedemann-Franz law and vanishing thermoelectric power in one-dimensional conductors
• Kinetics Modeling of Nanoparticle Growth on and Evaporation off Nanotubes
• Optical Phonon Lineshapes and Transport in Metallic Carbon Nanotubes under High Bias Voltage
• The heat equation for nanoconstrictions in 2D materials with Joule self-heating
• Validity of approximations applied in calculations of single-wall metallic carbon nanotube current-voltage characteristics