Nonsinusoidal current-phase relation in strongly ferromagnetic and moderately disordered SFS junctions

Abstract

We study the Josephson current in a junction comprising two superconductors linked by a strong ferromagnet in presence of impurities. We focus on a regime where the electron (and hole) motion is ballistic over the exchange length and diffusive on the scale of the weak link length. The current-phase relation is obtained for both two- and three dimensional ferromagnetic weak links. In the clean limit, the possibility of temperature-induced 0- transitions is demonstrated while the corresponding critical current versus temperature dependences are also studied.

10 pages, 7 figures

References in corpus (24)

• Proximity effects in superconductor-ferromagnet heterostructures
• Odd Triplet Superconductivity and Related Phenomena in Superconductor-Ferromagnet Structures
• Bipolar supercurrent in graphene
• Coupling of two superconductors through a ferromagnet : evidence for a pi-junction
• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• Superconducting states of pure and doped graphene
• Ferromagnet-Superconductor Hybrids
• Josephson Current and Multiple Andreev Reflections in Graphene SNS Junctions
• Critical Current Oscillations in Strong Ferromagnetic Pi-Junctions
• Josephson current in superconductor-ferromagnet structures with a nonhomogeneous magnetization
• Oscillations of the superconducting critical current in Nb-Cu-Ni-Cu-Nb junctions
• Half-integer Shapiro steps at the 0-pi crossover of a ferromagnetic Josephson junction
• Measurement of the current-phase relation of superconducting atomic contacts
• Spontaneous supercurrent induced by ferromagnetic pi-junctions
• Tailoring Graphene with Metals on Top
• Josephson effect in double-barrier superconductor-ferromagnet junctions
• A supercurrent switch in graphene $\pi$-junctions
• Peculiar properties of the Josephson junction at the transition from 0 to Pi state
• Superconducting proximity effect in a diffusive ferromagnet with spin-active interfaces
• Imaging spontaneous currents in superconducting arrays of pi-junctions
• Superharmonic Josephson relation at 0-/$\pi$-junction transition
• Exchange induced ordinary reflection in a single-channel superconductor-ferromagnet-superconductor junction
• Incomplete Andreev reflection in a clean Superconductor/Ferromagnet/Superconductor junction
• Nonsinusoidal current-phase relations and the $0-\pi$ transition in diffusive ferromagnetic Josephson junctions

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