Electron injection in a nanotube with leads: finite frequency noise-correlations and anomalous charges

Details Electron injection in a nanotube with leads: finite frequency noise-correlations and anomalous charges Electron injection in a nanotube with leads: finite frequency noise-correlations and anomalous charges

2004-05-14

arxiv.org/abs/cond-mat/0405325v2

Phys. Rev. B 71, 075416 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 5 figures

Scientific paper

10.1103/PhysRevB.71.075416

The non-equilibrium transport properties of a carbon nanotube which is connected to Fermi liquid leads, where electrons are injected in the bulk, are computed. A previous work which considered an infinite nanotube showed that the zero frequency noise correlations, measured at opposite ends of the nanotube, could be used to extract the anomalous charges of the chiral excitations which propagate in the nanotube. Here, the presence of the leads have the effect that such-noise cross-correlations vanish at zero frequency. Nevertheless, information concerning the anomalous charges can be recovered when considering the spectral density of noise correlations at finite frequencies, which is computed perturbatively in the tunneling amplitude. The spectrum of the noise cross-correlations is shown to depend crucially on the ratio of the time of flight of quasiparticles traveling in the nanotube to the ``voltage'' time which defines the width of the quasiparticle wave-packets injected when an electron tunnels. Potential applications toward the measurement of such anomalous charges in non-chiral Luttinger liquids (nanotubes or semiconductor quantum wires) are discussed.

Affiliated with

Also associated with

No associations

Rating

Electron injection in a nanotube with leads: finite frequency noise-correlations and anomalous charges does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electron injection in a nanotube with leads: finite frequency noise-correlations and anomalous charges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron injection in a nanotube with leads: finite frequency noise-correlations and anomalous charges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-671222