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    Transition by breaking of analyticity in the ground state of Josephson junction arrays as a static signature of the vortex jamming transition

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    Type
    Article
    Authors
    Nogawa, Tomoaki
    Yoshino, Hajime
    Kim, Bongsoo
    KAUST Grant Number
    KUK-I1-005-04
    Date
    2012-05-22
    Permanent link to this record
    http://hdl.handle.net/10754/600064
    
    Metadata
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    Abstract
    We investigate the ground state of the irrationally frustrated Josephson junction array with a controlling anisotropy parameter λ that is the ratio of the longitudinal Josephson coupling to the transverse one. We find that the ground state has one-dimensional periodicity whose reciprocal lattice vector depends on λ and is incommensurate with the substrate lattice. Approaching the isotropic point λ=1, the so-called hull function of the ground state exhibits analyticity breaking similar to the Aubry transition in the Frenkel-Kontorova model. We find a scaling law for the harmonic spectrum of the hull functions, which suggests the existence of a characteristic length scale diverging at the isotropic point. This critical behavior is directly connected to the jamming transition previously observed in the current-voltage characteristics by a numerical simulation. On top of the ground state there is a gapless continuous band of metastable states, which exhibit the same critical behavior as the ground state. © 2012 American Physical Society.
    Citation
    Nogawa T, Yoshino H, Kim B (2012) Transition by breaking of analyticity in the ground state of Josephson junction arrays as a static signature of the vortex jamming transition. Phys Rev E 85. Available: http://dx.doi.org/10.1103/PhysRevE.85.051132.
    Sponsors
    This work was supported by a Grant-in-Aid for Scientific Research (C) (Grant No. 21540386), a Grant-in-Aid for Scientific Research on Priority Areas “Novel States of Matter Induced by Frustration”(Grant No. 1905200*), and King Abdullah University of Science and Technology Global Research Partnership (Grant No. KUK-I1-005-04).
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review E
    DOI
    10.1103/PhysRevE.85.051132
    PubMed ID
    23004728
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevE.85.051132
    Scopus Count
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