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I–V characteristics and the electric-field effect in melt-grown YBa2Cu3Ox/Y2BaCuO5 HTSC crystals

  • Metals and Superconductors
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Abstract

The effect of an electric field E=120 MV/m in the electrode-insulator-superconductor system on I–V curves obtained at 77 K on two types of single-crystal samples cut from monolithic superconducting YBa2Cu3Ox/Y2BaCuO5 has been studied. The Y211 nonsuperconducting phase in the ingot was in the form of precipitates ≈1 µm in size. It has been found that an electric field applied to samples with a comparatively low Y211 content (volume fraction 8%) does not affect the critical current I c while reducing the resistance R at currents slightly above I c . In samples containing more than 35% Y211 phase, electric field results in an increase of I c and a decrease of R for I>I c . Data on the critical temperature T c and the temperature dependence of I c have also been obtained.

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Authors and Affiliations

  1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    B. I. Smirnov & T. S. Orlova

  2. Superconductive Components, Inc., Columbus, Ohio, 43212, USA

    S. Sengupta

  3. Argonne National Laboratory, Argonne, Illinois, 60439, USA

    K. C. Goretta

Authors
  1. B. I. Smirnov
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  2. T. S. Orlova
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  3. S. Sengupta
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  4. K. C. Goretta
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__________

Translated from Fizika Tverdogo Tela, Vol. 42, No. 7, 2000, pp. 1172–1175.

Original Russian Text Copyright © 2000 by Smirnov, Orlova, Sengupta, Goretta.

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Smirnov, B.I., Orlova, T.S., Sengupta, S. et al. I–V characteristics and the electric-field effect in melt-grown YBa2Cu3Ox/Y2BaCuO5 HTSC crystals. Phys. Solid State 42, 1207–1210 (2000). https://doi.org/10.1134/1.1131363

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