Switching the sign of Josephson current through Aharonov-Bohm interferometry
Fabrizio Dolcini, Francesco Giazotto
DOI 10.1103/PhysRevB.75.140511 · Physical Review B
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Abstract
The electromagnetostatic Aharonov-Bohm effect is proposed as a tool to realize a fully controllable Josephson π junction. Both the sign and the magnitude of the supercurrent can be tuned in a ring-shaped ballistic normal region coupled to superconducting electrodes by varying the magnetic flux and the electric field around suitable values. We provide a theoretical description of the system within the scattering matrix theory and discuss its implementation in a realistic setup.
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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