Physics – Condensed Matter – Superconductivity
Scientific paper
2003-11-07
Physics
Condensed Matter
Superconductivity
13 pages, to be published in Proc. NATO ARW "Quantum Transport in Metallic and Hybrid Nanostructures", StPetersburg, 2003
Scientific paper
10.1103/PhysRevB.70.064507
We calculate analytically the current statistics for a short diffusive wire between the normal reservoir and a short superconductor-normal metal-superconductor (SNS) junction, at arbitrary applied voltages and temperatures. The cumulant-generating function oscillates with the phase difference $\phi$ across the junction, approaching the normal-state value at $\phi=\pi$. At T=0 and at the applied voltage much smaller than the proximity gap $\Delta_\phi$, the current noise $P_I$ doubles and the third current cumulant $C_3$ is 4 times larger with respect to their values in the normal state; at $eV \gg \Delta_\phi$ they acquire large excess components. At the gap edge, $eV = \Delta_\phi$, the effective transferred charge defined through $dP_I/dI$ and $dP_I/dV$ approaches $0e$ and $3e$, respectively, which makes doubtful the interpretation of these quantities as physical elementary transferred charge. At $T \neq 0$, $C_3$ shows a non-monotonous voltage dependence with a dip near $eV = \Delta_\phi$.
Bezuglyi E. V.
Bratus' E. N.
Shumeiko Vitaly S.
Vinokur Valerii
No associations
LandOfFree
Phase dependent current statistics in short-arm Andreev interferometer 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 Phase dependent current statistics in short-arm Andreev interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase dependent current statistics in short-arm Andreev interferometer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-342534