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Electrodynamics of the vortex lattice in untwinned YBaCuO by complex impedance measurements

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Abstract:

We report complex impedance measurements in an untwinned YBaCuO crystal. Our broad frequency range covers both the quasi static response and the resistive response of the vortex lattice. It allow us to characterize the irreversibility line without the need of any frequency dependent pinning parameters. We confirm the validity of the two modes model of vortex dynamic, and extract both the surface critical current and the flux flow resistivity around the first order transition Tm. This latter is identified by the abrupt loss of pinning and by an unexpected step of (T) at Tm.

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Authors and Affiliations

  1. CRISMAT/ISMRA, boulevard du Maréchal Juin, 14050 Caen Cédex, France, , , , , , FR

    A. Pautrat, A. Daignere, C. Goupil & Ch. Simon

  2. Institute of molecular physics, Smoluchowskiego 17, Poznan, Poland, , , , , , PL

    B. Andrzejewski

  3. Superconductivity Research Laboratory, ISTEC, Tokyo 135, Japan, , , , , , JP

    A.I. Rykov & S. Tajima

Authors
  1. A. Pautrat
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  2. A. Daignere
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  3. C. Goupil
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  4. Ch. Simon
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  5. B. Andrzejewski
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  6. A.I. Rykov
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  7. S. Tajima
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Additional information

Received 22 November 2002 / Received in final form 17 February 2003 Published online 20 June 2003

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ID="a"e-mail: alain.pautrat@ismra.fr

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ID="b"UMR 6508 associée au CNRS

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Pautrat, A., Daignere, A., Goupil, C. et al. Electrodynamics of the vortex lattice in untwinned YBaCuO by complex impedance measurements. Eur. Phys. J. B 33, 279–284 (2003). https://doi.org/10.1140/epjb/e2003-00167-6

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  • DOI: https://doi.org/10.1140/epjb/e2003-00167-6

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