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Superconducting Fluctuations Above the Critical Temperature in Bi2Sr2Ca1−x Y x Cu2O8+δ as Revealed by Microwave Absorption

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Abstract

The superconducting fluctuations above the critical temperature in Bi2Sr2Ca1−x Y x Cu2O8+δ (x = 0–0.3) single crystals are studied by microwave absorption (MWA). The maximum in the MWA temperature dependence was observed close to the critical temperature. Its formation is explained by the change of the quasiparticle density of states due to superconducting fluctuations. The fluctuation area boundary is plotted on the phase diagram using the variation of the MWA temperature dependence with the hole density and is compared with the pseudogap phase behavior.

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Acknowledgements

The work was supported in part by the Russian Academy of Sciences within the Program 1.26P.

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Authors and Affiliations

  1. Zavoisky Physical-Technical Institute, Sibirsky Tract 10/7, Kazan, 420029, Russia

    I. Gimazov, Yu. Talanov & V. Sakhin

  2. Department of Engineering and Applied Sciences, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan

    T. Adachi

  3. Department of Applied Physics, Tohoku University, 6-6-05 Aoba, Aramaki, Sendai, 980-8579, Japan

    T. Noji & Y. Koike

Authors
  1. I. Gimazov
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  2. Yu. Talanov
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  3. V. Sakhin
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  4. T. Adachi
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  5. T. Noji
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  6. Y. Koike
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Correspondence to I. Gimazov.

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Gimazov, I., Talanov, Y., Sakhin, V. et al. Superconducting Fluctuations Above the Critical Temperature in Bi2Sr2Ca1−x Y x Cu2O8+δ as Revealed by Microwave Absorption. Appl Magn Reson 48, 861–870 (2017). https://doi.org/10.1007/s00723-017-0912-y

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  • DOI: https://doi.org/10.1007/s00723-017-0912-y

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