2012年5月
Transition by breaking of analyticity in the ground state of Josephson junction arrays as a static signature of the vortex jamming transition
PHYSICAL REVIEW E
- ,
- ,
- 巻
- 85
- 号
- 5
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevE.85.051132
- 出版者・発行元
- AMER PHYSICAL SOC
We investigate the ground state of the irrationally frustrated Josephson junction array with a controlling anisotropy parameter lambda 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 lambda and is incommensurate with the substrate lattice. Approaching the isotropic point lambda = 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.
- リンク情報
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- DOI
- https://doi.org/10.1103/PhysRevE.85.051132
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000304402100004&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861929201&origin=inward
- ID情報
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- DOI : 10.1103/PhysRevE.85.051132
- ISSN : 1539-3755
- SCOPUS ID : 84861929201
- Web of Science ID : WOS:000304402100004