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μSR in oxygen deficient YBa2Cu3O x (6.5⩽x⩽7.0)

  • Superconductivity: Magnetic Penetration Depths Vortex State Anisotropy
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Hyperfine Interactions Aims and scope Submit manuscript

Abstract

A systematic μSR study of the local magnetic field distribution in a series of oxygen deficient YBa2Cu3O x samples with 6.5⩽x⩽7.0 is reported. Special attention was given to perform the experiments under the same conditions, so that the oxygen content of the measured samples was the only parameter varied. The behavior of the depolarization rate σ as a function of the oxygen contentx was found to have strong similarities with the behavior of the critical temperatureT c as a function ofx. In particular, two step-like increases of σ were observed abovex=6.7 and 6.9. The temperature dependence of the normalized depolarization rate σ(T)/σ(0) is well described by the two-fluid model forx⩾6.781(1) and clearly deviates from this behavior forx⩽6.704(1). Our results are compared to those obtained by other groups.

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Author notes

  1. I. M. Savić

    Present address: Faculty of Physics, University of Belgrade, 11001, Belgrade, Yugoslavia

  2. J. W. Schneider

    Present address: TRIUMF, V6T 2A3, Vancouver, B.C., Canada

Authors and Affiliations

  1. Physik-Institut, Universität Zürich, CH-8001, Zürich, Switzerland

    B. Pümpin, H. Keller, W. Kündig, I. M. Savić, J. W. Schneider, H. Simmler & P. Zimmermann

  2. Laboratorium für Festkörperphysik, ETH Zürich, CH-8093, Zürich, Switzerland

    E. Kaldis & S. Rusiecki

  3. IBM Research Division, Zurich Research Laboratory, CH-8803, Rüschlikon, Switzerland

    C. Rossel

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  1. B. Pümpin
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  2. H. Keller
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  3. W. Kündig
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  4. I. M. Savić
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  5. J. W. Schneider
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  6. H. Simmler
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  7. P. Zimmermann
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  8. E. Kaldis
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  9. S. Rusiecki
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  10. C. Rossel
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Pümpin, B., Keller, H., Kündig, W. et al. μSR in oxygen deficient YBa2Cu3O x (6.5⩽x⩽7.0). Hyperfine Interact 63, 25–31 (1991). https://doi.org/10.1007/BF02395981

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  • DOI: https://doi.org/10.1007/BF02395981

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