Nonlocal supercurrent in mesoscopic Josephson junctions
J. P. Heida, B. J. van Wees, T. M. Klapwijk, G. Borghs
DOI 10.1103/PhysRevB.57.R5618 · Physical Review B
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Abstract
We demonstrate that in a mesoscopic, fully phase coherent, superconductor–two-dimensional-electron-gas–superconductor structure the period of the critical current versus flux through the junction is h/e, i.e., twice the superconducting flux quantum. Using a heuristic approach we argue that the observations point to a nonlocal supercurrent density. The particles carrying the supercurrent sense the superconductor phase, which is spatially modulated by the magnetic field, along the entire electrode.
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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