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Photo-induced increase of the superconducting coherence lengths in oxygen-deficient YBa2Cu3Ox thin films

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Abstract:

() thin films were photodoped with white light at various temperatures from 70 K to 290 K. Before and after the excitation, the magnetoconductivity was measured in a magnetic field B = 0.5 T, and the experimental results were fitted to the Aslamazov-Larkin theory of superconducting order-parameter fluctuations to determine the superconducting coherence lengths, and . We observed that the photodoping process enhanced and and that the amount increased with the photodoping temperature increase. On the other hand, the superconducting anisotropy / decreased with increasing temperature. The photodoping effect enhances superconducting properties of partially oxygen-deficient samples and is considerably increased by high doping temperatures.

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Authors and Affiliations

  1. Institut für Materialphysik der Universität Wien, Kopernikusgasse 15, 1060 Wien, Austria, , , , , , AT

    C. Stockinger, G. Heine, W. Markowitsch & W. Lang

  2. Department of Electrical and Computer Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14627-023, USA, , , , , , US

    R. Adam & R. Sobolewski

  3. Angewandte Physik, Johannes-Kepler-Universität Linz, 4040 Linz, Austria, , , , , , AT

    R. Rössler, J.D. Pedarnig & D. Bäuerle

Authors
  1. C. Stockinger
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  2. G. Heine
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  3. W. Markowitsch
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  4. W. Lang
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  5. R. Adam
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  6. R. Sobolewski
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  7. R. Rössler
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  8. J.D. Pedarnig
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  9. D. Bäuerle
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Additional information

Received 15 December 1999 and Received in final form 24 May 2000

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Stockinger, C., Heine, G., Markowitsch, W. et al. Photo-induced increase of the superconducting coherence lengths in oxygen-deficient YBa2Cu3Ox thin films. Eur. Phys. J. B 18, 227–231 (2000). https://doi.org/10.1007/s100510070052

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  • DOI: https://doi.org/10.1007/s100510070052

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