Current-controllable planar S-(S/F)-S Josephson junction

O. Vávra, W. Pfaff, R. Monaco, M. Aprili, C. Strunk

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the experimental realization of a current-controllable lateral S-(S/F)-S Josephson junction based on the inverse proximity effect in the superconductor-ferromagnet bilayer (S/F). The dependence of the critical current on the magnetic field Ic(B) shows a Fresenel-like pattern, which could qualitatively be understood with the theory of Josephson junctions in a magnetic field gradient. The amplitude and the period of the Ic(B) pattern can be controlled by spin-polarized quasiparticles injection into the weak link. The period change suggests controllability of effective area of the Josephson junction. Furthermore, a temperature-induced transition from a weak-link behavior to a strong coupling between the superconducting banks is also observed in these lateral Josephson junctions.

Original languageEnglish (US)
Article number072602
JournalApplied Physics Letters
Volume102
Issue number7
DOIs
StatePublished - Feb 18 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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