Archivio Istituzionale della RicercaThe 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.
Switching the sign of Josephson current through Aharonov-Bohm interferometry / Dolcini, Fabrizio; Giazotto, F.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 75:14(2007), pp. 140511-1-140511-4. [10.1103/PhysRevB.75.140511]
Switching the sign of Josephson current through Aharonov-Bohm interferometry
DOLCINI, FABRIZIO;
2007
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.
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https://hdl.handle.net/11583/2303680
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