Observation of impedance oscillations in single walled carbon nanotube bundles excited by high frequency signals

Abstract

We report experimental observation of impedance oscillations in single-walled carbon nanotubes measured from 100 MHz to 65 GHz on coplanar wave guides and a power law dependence of the differential conductance with bias voltage. From the crossover of the real and imaginary parts of the complex impedance observed in the range of 10 GHz, we estimate a long lifetime of 15 ps that can support the claim of ballistic transport. By measuring the scattering parameters at high-frequencies of a few aligned single-walled bundles at low temperatures we show that, this observation is strongly influenced by the number of tubes available.

arXiv commentsubmitted to Europhys Lett

References in corpus (5)

• Luttinger Liquid Behavior in Carbon Nanotubes
• Coulomb Interactions and Mesoscopic Effects in Carbon Nanotubes
• Correlated transport and non-Fermi liquid behavior in single-wall carbon nanotubes
• Microwave Transport in Metallic Single-Walled Carbon Nanotubes
• Origin of conductivity cross over in entangled multi-walled carbon nanotube network filled by iron