Phonon-assisted tunneling in interacting suspended single wall carbon nanotubes

Details Phonon-assisted tunneling in interacting suspended single wall carbon nanotubes Phonon-assisted tunneling in interacting suspended single wall carbon nanotubes

2005-09-23

arxiv.org/abs/cond-mat/0509597v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, 3 figures

Scientific paper

10.1088/1367-2630/7/1/244

Transport in suspended metallic single wall carbon nanotubes in the presence of strong electron-electron interaction is investigated. We consider a tube of finite length and discuss the effects of the coupling of the electrons to the deformation potential associated to the acoustic stretching and breathing modes. Treating the interacting electrons within the framework of the Luttinger liquid model, the low-energy spectrum of the coupled electron-phonon system is evaluated. The discreteness of the spectrum is reflected in the differential conductance which, as a function of the applied bias voltage, exhibits three distinct families of peaks. The height of the phonon-assisted peaks is very sensitive to the parameters. The phonon peaks are best observed when the system is close to the Wentzel-Bardeen singularity.

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