Electron-phonon coupling in single-walled carbon nanotubes determined by shot noise

2010/09/04 by Fan Wu, Pauli Virtanen, Soren Andresen +4 · 14 citations
Chemistry · Materials Science · Physics and Astronomy · #Atomic physics #Biasing #Carbon Nanotubes in Composites #Carbon nanotube #Chemistry #Condensed matter physics #Coupling (piping) #Electron #Materials science #Mechanical and Optical Resonators #Molecular physics #Nanotechnology #Noise (video) #Optics #Phonon #Physics #Quantum and electron transport phenomena #Quantum mechanics #Shot noise #Voltage #cond-mat.mes-hall

paper · pdf · doi:10.1063/1.3533018

published in Applied Physics Letters 97(26) (American Institute of Physics) · 9 pages, 3 figures

arxiv created 2010/09/04 · openalex publication_date 2010/12/27 · arxiv updated 2011/04/22 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05

Abstract

We have measured shot noise in metallic single-walled carbon nanotubes of length L=1 μm and have found strong suppression of noise with increasing voltage. We conclude that the coupling of electron and phonon baths at temperatures Te and Tph is described at intermediate bias (20 mV<Vds≲200 mV) by heat flow equation P=ΣL(Te3−Tph3), where Σ∼3×10−9 W/m K3 due to electron interaction with acoustic phonons, while at higher voltages optical phonon-electron interaction leads to P=κopL[N(Te)−N(Tph)], where N(T)=1/[exp(ℏΩ/kBT)−1] with optical phonon energy ℏΩ and κop=2×102 W/m.

Citations

• Electron-phonon heat transfer in monolayer and bilayer graphene
• Electrical and thermal transport in metallic single-wall carbon nanotubes on insulating substrates
• Electron Transport and Hot Phonons in Carbon Nanotubes
• Spatially Resolved Temperature Measurements of Electrically Heated Carbon Nanotubes
• Negative Differential Conductance and Hot Phonons in Suspended Nanotube Molecular Wires
• Thermal shot noise in top-gated single carbon nanotube field effect transistors
• Shot Noise in Mesoscopic Conductors