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Far-Infrared Absorption by Bulk YBa2Cu3O6.89 Superconductor

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Advances in Superconductivity III

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Abstract

We have developed a Far-Infrared-Laser Calorimetric method to investigate far-infrared absorption by high-Tc superconductors using an optically pumped CH3OH laser. We obtained information on both transition temperature and superconducting energy gap. The sintered YBa2Cu3O6.89 specimen absorbed photons below the gap energy even in the superconducting state. We found that this absorption would have an onset near 5 meV and consider that the existence of the onset will support a model of the low-energy excitation.

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Authors and Affiliations

  1. National Research Laboratory of Metrology, 1-4, Umezono 1-chome, Tsukuba, Ibaraki, 305, Japan

    Etsuo Kawate, Atsushi Onae, Yasuhiro Nakazawa & Masahiro Okaji

  2. Institute for Solid State Physics, The University of Tokyo, 22-1, Roppongi 7-chome, Minato-ku, Tokyo, 106, Japan

    Masayasu Ishikawa & Yukinobu Miki

Authors
  1. Etsuo Kawate
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  2. Atsushi Onae
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  3. Yasuhiro Nakazawa
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  4. Masahiro Okaji
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  5. Masayasu Ishikawa
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  6. Yukinobu Miki
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Editor information

Editors and Affiliations

  1. Electrotechnical Laboratory, Umezono, Tsukuba 305, Japan

    Koji Kajimura

  2. School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464, Japan

    Hisao Hayakawa

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© 1991 Springer-Verlag Tokyo

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Kawate, E., Onae, A., Nakazawa, Y., Okaji, M., Ishikawa, M., Miki, Y. (1991). Far-Infrared Absorption by Bulk YBa2Cu3O6.89 Superconductor. In: Kajimura, K., Hayakawa, H. (eds) Advances in Superconductivity III. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68141-0_42

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  • DOI: https://doi.org/10.1007/978-4-431-68141-0_42

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68143-4

  • Online ISBN: 978-4-431-68141-0

  • eBook Packages: Springer Book Archive

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