2011/08/29 by Carolin Klose, Trupti Khaire, Trupti S. Khaire +14 · 4 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Condensed matter physics #Electron #Ferromagnetism #Josephson effect #Magnetic and transport properties of perovskites and related materials #Materials science #Neutron #Neutron reflectometry #Neutron scattering #Physics #Physics of Superconductivity and Magnetism #Reflectometry #Spin (aerodynamics) #Spin polarization #Superconductivity #Supercurrent #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.108.127002
4 pages, 4 figures
arxiv created 2011/08/29 · openalex publication_date 2012/03/20 · arxiv updated 2015/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have observed long-range spin-triplet supercurrents in Josephson junctions containing ferromagnetic (F) materials, which are generated by noncollinear magnetizations between a central Co/Ru/Co synthetic antiferromagnet and two outer thin F layers. Here we show that the spin-triplet supercurrent is enhanced up to 20 times after our samples are subject to a large in-plane field. This occurs because the synthetic antiferromagnet undergoes a "spin-flop" transition, whereby the two Co layer magnetizations end up nearly perpendicular to the magnetizations of the two thin F layers. We report direct experimental evidence for the spin-flop transition from scanning electron microscopy with polarization analysis and from spin-polarized neutron reflectometry. These results represent a first step toward experimental control of spin-triplet supercurrents.