Energy loss of the electron system in individual single-walled carbon nanotubes

Abstract

We characterize the energy loss of the non-equilibrium electron system in individual metallic single-walled carbon nanotubes at low temperature. Using Johnson noise thermometry, we demonstrate that, for a nanotube with ohmic contacts, the dc resistance at finite bias current directly reflects the average electron temperature. This enables a straightforward determination of the thermal conductance associated with cooling of the nanotube electron system. In analyzing the temperature- and length-dependence of the thermal conductance, we consider contributions from acoustic phonon emission, optical phonon emission, and hot electron outdiffusion.

16 pages, including supporting information; to appear in Nano Letters

References in corpus (3)

• Scaling of Resistance and Electron Mean Free Path of Single-Walled Carbon Nanotubes
• Electrical and Thermal Transport in Metallic Single-Wall Carbon Nanotubes on Insulating Substrates
• Thermal Probing of Energy Dissipation in Current-Carrying Carbon Nanotubes

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• Development of high frequency and wide bandwidth Johnson noise thermometry
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• Bolometric and non-bolometric radio frequency detection in a metallic single-walled carbon nanotube
• Wide bandwidth nanowire electromechanics on insulating substrates at room temperature
• Spatial Dependence of Electron Interactions in Carbon Nanotubes
• Thermal relaxation in titanium nanowires: signatures of inelastic electron-boundary scattering in heat transfer