Electron transport in very clean, as-grown suspended carbon nanotubes

Pronounced electron-phonon interactions in ultraclean suspended carbon nanotubes

Rohan Dhall,1 Shun-Wen Chang,2 Zuwei Liu,2 and Stephen B. Cronin1,2,3,* 1Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA 2Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA 3Department of Chemistry, University of Southern California, Los Angeles, California 90089, USA (Received 11...

Electron Transport in Single-Walled Carbon Nanotubes

Electron Transport in Single-Walled Carbon Nanotubes Meninder S. Purewal We present electron transport experiments on single walled carbon nanotubes (SWNTs). By measuring the linear scaling of resistance with length, we determine an unusually long mean free path of Lm ∼1 μm at room temperature. From the temperature dependence of the mean free path for over 10 samples we show that inelastic scat...

Secondary Electron Interference from Trigonal Warping in Clean Carbon Nanotubes.

We investigate Fabry-Perot interference in an ultraclean carbon nanotube resonator. The conductance shows a clear superstructure superimposed onto conventional Fabry-Perot oscillations. A sliding average over the fast oscillations reveals a characteristic slow modulation of the conductance as a function of the gate voltage. We identify the origin of this secondary interference in intervalley an...

Polarons in suspended carbon nanotubes.

We prove theoretically the possibility of electric-field controlled polaron formation involving flexural (bending) modes in suspended carbon nanotubes. Upon increasing the field, the ground state of the system with a single extra electron undergoes a first-order phase transition between an extended state and a localized polaron state. For a common experimental setup, the threshold electric fiel...

Fabrication and Characterization of As-Grown, Suspended Single-Walled Carbon Nanotubes