Evidence for mean free path fluctuation induced pinning in YBa2Cu3O7 and YBa2Cu4O8 films

R. Griessen; Hai-Hu Wen Hai-Hu; A. J.J. Van Dalen; B. Dam; J. Rector; H. G. Schnack; S. Libbrecht; E. Osquiguil; Y. Bruynseraede

doi:10.1103/PhysRevLett.72.1910

Evidence for mean free path fluctuation induced pinning in YBa2Cu3O7 and YBa2Cu4O8 films

R. Griessen^*, Hai-Hu Wen Hai-Hu, A. J.J. Van Dalen, B. Dam, J. Rector, H. G. Schnack, S. Libbrecht, E. Osquiguil, Y. Bruynseraede

^*Corresponding author for this work

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

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Abstract

The critical current jc and the pinning energy Uc have been determined for three types of yttrium-based superconducting films from current js and dynamic relaxation Q=d lnjs/d ln(dB/dt) data by means of the generalized inversion scheme. For B<2 T and T<80 K the temperature dependence of jc and Uc for all films is found to be in excellent agreement with a model of single vortices pinned by randomly distributed weak pinning centers via spatial fluctuations of the charge carrier mean free path. Pinning due to spatial fluctuations of Tc is not observed.

Original language	English
Pages (from-to)	1910-1913
Number of pages	4
Journal	Physical Review Letters
Volume	72
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.72.1910
Publication status	Published - 1994

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10.1103/PhysRevLett.72.1910

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title = "Evidence for mean free path fluctuation induced pinning in YBa2Cu3O7 and YBa2Cu4O8 films",

abstract = "The critical current jc and the pinning energy Uc have been determined for three types of yttrium-based superconducting films from current js and dynamic relaxation Q=d lnjs/d ln(dB/dt) data by means of the generalized inversion scheme. For B<2 T and T<80 K the temperature dependence of jc and Uc for all films is found to be in excellent agreement with a model of single vortices pinned by randomly distributed weak pinning centers via spatial fluctuations of the charge carrier mean free path. Pinning due to spatial fluctuations of Tc is not observed.",

author = "R. Griessen and {Wen Hai-Hu}, Hai-Hu and {Van Dalen}, {A. J.J.} and B. Dam and J. Rector and Schnack, {H. G.} and S. Libbrecht and E. Osquiguil and Y. Bruynseraede",

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doi = "10.1103/PhysRevLett.72.1910",

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volume = "72",

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T1 - Evidence for mean free path fluctuation induced pinning in YBa2Cu3O7 and YBa2Cu4O8 films

AU - Griessen, R.

AU - Wen Hai-Hu, Hai-Hu

AU - Van Dalen, A. J.J.

AU - Dam, B.

AU - Rector, J.

AU - Schnack, H. G.

AU - Libbrecht, S.

AU - Osquiguil, E.

AU - Bruynseraede, Y.

PY - 1994

Y1 - 1994

N2 - The critical current jc and the pinning energy Uc have been determined for three types of yttrium-based superconducting films from current js and dynamic relaxation Q=d lnjs/d ln(dB/dt) data by means of the generalized inversion scheme. For B<2 T and T<80 K the temperature dependence of jc and Uc for all films is found to be in excellent agreement with a model of single vortices pinned by randomly distributed weak pinning centers via spatial fluctuations of the charge carrier mean free path. Pinning due to spatial fluctuations of Tc is not observed.

AB - The critical current jc and the pinning energy Uc have been determined for three types of yttrium-based superconducting films from current js and dynamic relaxation Q=d lnjs/d ln(dB/dt) data by means of the generalized inversion scheme. For B<2 T and T<80 K the temperature dependence of jc and Uc for all films is found to be in excellent agreement with a model of single vortices pinned by randomly distributed weak pinning centers via spatial fluctuations of the charge carrier mean free path. Pinning due to spatial fluctuations of Tc is not observed.

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Evidence for mean free path fluctuation induced pinning in YBa2Cu3O7 and YBa2Cu4O8 films

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