Physics – Condensed Matter – Superconductivity
Scientific paper
2010-06-24
Phys. Rev. B, 82, 212501 (2010)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevB.82.212501
The transport through a metal-superconductor interface is governed by a special charge conversion process, the Andreev reflection, where each incident electron drags another electron with itself to form a Cooper pair. At the normal side a hole is left behind dressed by superconducting correlations. For a low transparency interface the simultaneous transfer of two charges is strongly suppressed leading to a reduced conductance. Here we demonstrate that this reduced conductance can be turned to an infinite one by tuning the nanoscale geometry. Creating variable size nanojunctions between a thin metallic film and a superconducting tip we study how multiple phase-coherent scatterings enhance the superconducting correlations at the normal side. By increasing the coherent volume of carriers initially the transmission through the interface is continuously enhanced. However, as the phase-coherent volume reaches the opposite surface of the thin film a resonator is formed, and a robust transition is induced due to Cooper pair condensation.
Geresdi A.
Halbritter András
Mihaly Gyorgy
No associations
LandOfFree
Transition from coherent mesoscopic single particle transport to proximity Josephson-current 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 Transition from coherent mesoscopic single particle transport to proximity Josephson-current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transition from coherent mesoscopic single particle transport to proximity Josephson-current will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-676240