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The least anisotropic high-Tc superconductor CuBa2Ca3Cu4O12−y

  • Plenary and Invited Papers
  • Superconductivity
  • Published:
Czechoslovak Journal of Physics Aims and scope

Abstract

A nontoxic high-Tc (=118 K) superconductor CuBa2Ca3Cu4O12−y (Cu-1234) has a low superconducting anisotropy (γ=1.5) and a long coherence length along c-axis (ξc=10 Å). The superconducting anisotropy of Cu-1234 was compared with other cuprate superconductors by using the experimental data from a common measurement method of anisotropy. The Cu-1234 was found to have the least superconducting anisotropy among cuprate superconductors. The least ansotropy originates from a strong superconducting-coupling between superconducting Ca3Cu4O8-block layers mediated by superconductive charge-reservoir CuBa2O4−y layer, the thickness of the superconducting block layer (9.6 Å) and high carrier concentration.

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Author notes

  1. Kazuyasu Tokiwa & Takeyo Tukamoto

    Present address: Department of Applied Physics, Faculty of Science, Science University of Tokyo, 1-3 Kagurazaka, Shinjuku-ku, 162, Tokyo

Authors and Affiliations

  1. Electrotechnical Laboratory, 1-1-4 Umezono, 305, Tsukuba, Ibaraki, Japan

    Hideo Ihara, Akira Iyo, Kazuyasu Tokiwa, Takeyo Tukamoto, Norio Terada, Madoka Tokumoto & Masaichi Umeda

Authors
  1. Hideo Ihara
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  2. Akira Iyo
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  3. Kazuyasu Tokiwa
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  4. Takeyo Tukamoto
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  5. Norio Terada
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  6. Madoka Tokumoto
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  7. Masaichi Umeda
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Ihara, H., Iyo, A., Tokiwa, K. et al. The least anisotropic high-Tc superconductor CuBa2Ca3Cu4O12−y . Czech J Phys 46 (Suppl 6), 3185–3186 (1996). https://doi.org/10.1007/BF02548128

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  • DOI: https://doi.org/10.1007/BF02548128

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