Transition from coherent mesoscopic single-particle transport to Josephson proximity current
A. Geresdi, A. Halbritter, G. Mihály
DOI 10.1103/PhysRevB.82.212501 · Physical Review B
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Abstract
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 the transmission through the interface is smoothly enhanced as reflected in the zero-bias conductance. As the phase-coherent volume reaches the opposite surface of the thin film a resonator is formed, the conductance of the interface is dramatically enhanced, and finally a proximity induced Josephson supercurrent is established.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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