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Photoemission Study of Bi2Nd0.5Ca2.5Cu2Oy and Bi2(La,Pr)0.5Ca2.5Cu2Oy Superconductors

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Abstract

X-ray photoelectron spectra (XPS) of Cu 2p have been studied for oxygen- and air-sintered samples of Bi2(La,Pr)0.5Ca2.5Cu2Oy and Bi2Nd0.5Ca2.5Cu2Oy. We estimated the number of Cu 3d electrons, n d , and charge transfer energy, Δ, from these results. We point out the possibility that the difference of T C between these compounds with the same doped hole concentrations is associated with the difference of n d . The role of the Cu 3d – O2p charge transfer in superconductivity is discussed.

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Authors and Affiliations

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

    Kazuto Ikeda, Fumio Munakata, Rittaporn Itti, Takashi Kawano, H. Yamauchi & Naoki Koshizuka

Authors
  1. Kazuto Ikeda
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  2. Fumio Munakata
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  3. Rittaporn Itti
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  4. Takashi Kawano
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  5. H. Yamauchi
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  6. Naoki Koshizuka
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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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Ikeda, K., Munakata, F., Itti, R., Kawano, T., Yamauchi, H., Koshizuka, N. (1991). Photoemission Study of Bi2Nd0.5Ca2.5Cu2Oy and Bi2(La,Pr)0.5Ca2.5Cu2Oy Superconductors. In: Kajimura, K., Hayakawa, H. (eds) Advances in Superconductivity III. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68141-0_18

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  • DOI: https://doi.org/10.1007/978-4-431-68141-0_18

  • 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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