Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads

Details Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads

2006-11-24

arxiv.org/abs/cond-mat/0611627v2

Physical Review B 76 (13/07/2007) 045104

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.76.045104

The injection of electrons in the bulk of carbon nanotube which is connected to ideal Fermi liquid leads is considered. While the presence of the leads gives a cancellation of the noise cross-correlations, the auto-correlation noise has a Fano factor which deviates strongly from the Schottky behavior at voltages where finite size effects are expected. Indeed, as the voltage is increased from zero, the noise is first super-poissonian, then sub-poissonian, and eventually it reaches the Schottky limit. These finite size effects are also tested using a diagnosis of photo-assisted transport, where a small AC modulation is superposed to the DC bias voltage between the injection tip and the nanotube. When finite size effects are at play, we obtain a stepwise behavior for the noise derivative, as expected for normal metal systems, whereas in the absence of finite size effects, due to the presence of Coulomb interactions, a smoothed staircase is observed. The present work shows that it is possible to explore finite size effects in nanotube transport via a zero frequency noise measurement.

Affiliated with

Also associated with

No associations

Rating

Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads 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 Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-539972