@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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              A Josephson bijunction made of three superconductors connected by a quantum dot is considered in the regime where the dot carries a magnetic moment. In the range of parameters where such a dot, if inserted in a two-terminal Josephson junction, creates a $\\pi$-shift of the phase, the bijunction forming a triangular unit is frustrated. This frustration is studied both within a phenomenological and a microscopic model. Frustration stabilizes a phase vortex centered on the dot, with two degenerate states carrying opposite vorticities, independently of the direction of the magnetic moment. Embedding the bijunction in a superconducting loop allows to create a tunable "$\\varphi$"-junction whose equilibrium phase can take any value. For large enough inductance, it generates noninteger spontaneous flux. Multi-loop configurations are also studied.
            """ ;
    dct:identifier "hal-00997570" ;
    dct:issued "2026-05-05T10:03:20.422077"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-05T10:03:20.422082"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Spontaneous vortex state and $\\varphi$-junction in a superconducting bijunction with a localized spin" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
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    dcat:keyword "infoeu-reposemanticsarticle",
        "josephson-junction-arrays",
        "josephson-junctions",
        "journal-articles",
        "physcondcm-genphysics-physicscondensed-matter-cond-matother-cond-matother",
        "quantum-dots" ;
    dcat:landingPage <ISSN:%201098-0121> .

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    dct:issued "2026-05-05T10:03:20.424154"^^xsd:dateTime ;
    dct:modified "2026-05-05T10:03:20.406825"^^xsd:dateTime ;
    dct:title "Spontaneous vortex state and $\\varphi$-junction in a superconducting bijunction with a localized spin" ;
    dcat:accessURL <https://hal.science/hal-00997570> .

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