Current noise in long diffusive SNS junctions in the incoherent MAR regime

Details Current noise in long diffusive SNS junctions in the incoherent MAR regime Current noise in long diffusive SNS junctions in the incoherent MAR regime

2000-10-14

arxiv.org/abs/cond-mat/0010203v2

Physics

Condensed Matter

Superconductivity

improved version, to be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.63.100501

Spectral density of current fluctuations at zero frequency is calculated for a long diffusive SNS junction with low-resistive interfaces. At low temperature, T << Delta, the subgap shot noise approaches linear voltage dependence, S=(2/ 3R)(eV + 2Delta), which is the sum of the shot noise of the normal conductor and voltage independent excess noise. This result can also be interpreted as the 1/3-suppressed Poisson noise for the effective charge q = e(1+2Delta/eV) transferred by incoherent multiple Andreev reflections (MAR). At higher temperatures, anomalies of the current noise develop at the gap subharmonics, eV = 2Delta/n. The crossover to the hot electron regime from the MAR regime is analyzed in the limit of small applied voltages.

Affiliated with

Also associated with

No associations

Rating

Current noise in long diffusive SNS junctions in the incoherent MAR regime 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 Current noise in long diffusive SNS junctions in the incoherent MAR regime, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current noise in long diffusive SNS junctions in the incoherent MAR regime will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-158303