Detection of the Phase Shift from a Single Abrikosov Vortex
2010 (English)In: Physical Review D. Particles and fields, ISSN 0556-2821, E-ISSN 1089-4918, Vol. 104, 227003- p.Article in journal (Refereed) Published
We probe a quantum mechanical phase rotation induced by a single Abrikosov vortex in a superconducting lead, using a Josephson junction, made at the edge of the lead, as a phase-sensitive detector. We observe that the vortex induces a Josephson phase shift equal to the polar angle of the vortex within the junction length. When the vortex is close to the junction it induces a π step in the Josephson phase difference, leading to a controllable and reversible switching of the junction into the 0-π state. This in turn results in an unusual Φ0/2 quantization of the flux in the junction. The vortex may hence act as a tunable “phase battery” for quantum electronics.
Place, publisher, year, edition, pages
2010. Vol. 104, 227003- p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:su:diva-48324DOI: 10.1103/PhysRevLett.104.227003ISI: 000278477500008OAI: oai:DiVA.org:su-48324DiVA: diva2:375195
authorCount :32010-12-072010-12-072011-05-26Bibliographically approved