Magnetic-field-induced crossover from flux-flow to Josephson-junction behavior in a highly transparent weak link

T. Horide; K. Matsumoto; A. Ichinose; Masashi Mukaida; Y. Yoshida; S. Horii

doi:10.1103/PhysRevB.75.020504

Magnetic-field-induced crossover from flux-flow to Josephson-junction behavior in a highly transparent weak link

T. Horide, K. Matsumoto, A. Ichinose, Masashi Mukaida, Y. Yoshida, S. Horii

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Magnetic-field-induced Josephson-junction (JJ) behavior in a highly transparent weak link was observed at the 5° tilt low angle grain boundary (LAGB) in a Y Ba2 Cu3 O7-δ film. The magnetic field dependence of current density-voltage curves showed that Abrikosov Josephson (AJ) vortices exist in the LAGB. Both JJ and flux-flow (FF) behaviors were observed in a single LAGB depending on the temperature and magnetic field. The crossover from FF to JJ arose from the spread of the phase variation along the junction when the AJ vortex cores overlapped at B* = 0 (4.4l)2, where l is the characteristic length of AJ vortex.

Original language	English
Article number	020504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	75
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.75.020504
Publication status	Published - Jan 24 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.75.020504

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title = "Magnetic-field-induced crossover from flux-flow to Josephson-junction behavior in a highly transparent weak link",

abstract = "Magnetic-field-induced Josephson-junction (JJ) behavior in a highly transparent weak link was observed at the 5° tilt low angle grain boundary (LAGB) in a Y Ba2 Cu3 O7-δ film. The magnetic field dependence of current density-voltage curves showed that Abrikosov Josephson (AJ) vortices exist in the LAGB. Both JJ and flux-flow (FF) behaviors were observed in a single LAGB depending on the temperature and magnetic field. The crossover from FF to JJ arose from the spread of the phase variation along the junction when the AJ vortex cores overlapped at B* = 0 (4.4l)2, where l is the characteristic length of AJ vortex.",

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T1 - Magnetic-field-induced crossover from flux-flow to Josephson-junction behavior in a highly transparent weak link

AU - Horide, T.

AU - Matsumoto, K.

AU - Ichinose, A.

AU - Mukaida, Masashi

AU - Yoshida, Y.

AU - Horii, S.

PY - 2007/1/24

Y1 - 2007/1/24

N2 - Magnetic-field-induced Josephson-junction (JJ) behavior in a highly transparent weak link was observed at the 5° tilt low angle grain boundary (LAGB) in a Y Ba2 Cu3 O7-δ film. The magnetic field dependence of current density-voltage curves showed that Abrikosov Josephson (AJ) vortices exist in the LAGB. Both JJ and flux-flow (FF) behaviors were observed in a single LAGB depending on the temperature and magnetic field. The crossover from FF to JJ arose from the spread of the phase variation along the junction when the AJ vortex cores overlapped at B* = 0 (4.4l)2, where l is the characteristic length of AJ vortex.

AB - Magnetic-field-induced Josephson-junction (JJ) behavior in a highly transparent weak link was observed at the 5° tilt low angle grain boundary (LAGB) in a Y Ba2 Cu3 O7-δ film. The magnetic field dependence of current density-voltage curves showed that Abrikosov Josephson (AJ) vortices exist in the LAGB. Both JJ and flux-flow (FF) behaviors were observed in a single LAGB depending on the temperature and magnetic field. The crossover from FF to JJ arose from the spread of the phase variation along the junction when the AJ vortex cores overlapped at B* = 0 (4.4l)2, where l is the characteristic length of AJ vortex.

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Magnetic-field-induced crossover from flux-flow to Josephson-junction behavior in a highly transparent weak link

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