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Specific Heat of YBa2Cu4O8 near Tc

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Advances in Superconductivity III

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Abstract

Specific heat measurements are reported for a polycrystalline, bulk sample of YBa2Cu4O8 prepared at high oxygen pressure. The magnitude of the idealized specific heat jump ΔCp/T at Tc (=80 ± 0.5K) is 15.5±2 mJ/K2-mole. The transition width ΔTc is about 3K. The size of the jump is greatly reduced compared to YBa2Cu3O7. The normal state magnetic susceptibility is somewhat smaller than in YBa2Cu3O7 and is temperature dependent. The results suggest a smaller electronic density of states for YBa2Cu4O8.

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Author information

Authors and Affiliations

  1. Superconductivity Research Laboratory, International Superconductivity Technology Center, 10-13, Shinonome 1-chome, Koto-ku, Tokyo, 135, Japan

    J. O. Willis, Izumi Tomeno, Takayuki Miyatake, Takao Itoh, Keishi Tai, Naoki Koshizuka & Shoji Tanaka

Authors
  1. J. O. Willis
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  2. Izumi Tomeno
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  3. Takayuki Miyatake
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  4. Takao Itoh
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  5. Keishi Tai
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  6. Naoki Koshizuka
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  7. Shoji Tanaka
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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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Willis, J.O. et al. (1991). Specific Heat of YBa2Cu4O8 near Tc . In: Kajimura, K., Hayakawa, H. (eds) Advances in Superconductivity III. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68141-0_24

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  • DOI: https://doi.org/10.1007/978-4-431-68141-0_24

  • 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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