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Advances in Superconductivity VII pp 155–158Cite as

NMR Study of the Magnetism and Superconductivity in Cu1+xCo2−xS4

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Abstract

A correlation between the superconducting (SC) transition and the antiferromagnetic (AF) spin fluctuations in a new SC copper thiospinel Cu1+xCo2−xS4 (x=0−0.5) was investigated microscopically by an NMR experiment at 75MHz in the range of T=4.2−200K. For x=0.5 (TN=19.0K, TC=2.3K), (T1 T)−1 of both 63Cu at A site and 59Co at B site are significantly enhanced with lowering T below ~100K. While, for x=0 (TN=17.5K TC=0), the (T1T)−1 enhancements are strongly suppressed. This indicates that the AF spin correlations grow significantly in the SC sample (x=0.5) than in the non-SC sample (x=0).

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References

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Author information

Authors and Affiliations

  1. Graduate School of Science & Technology, Kobe University, Kobe, 657, Japan

    Yuji Furukawa & Shinji Wada

  2. Faculty of Science, Kobe University, Kobe, 657, Japan

    Shinji Wada

  3. Faculty of General Education, Ehime University, Ehime, 790, Japan

    Kazuo Miyatani & Toshiro Tanaka

  4. Faculty of Science, Ehime University, Ehime, 790, Japan

    Manabu Fukugauchi

  5. Institute for Solid State Physics, University of Tokyo, Tokyo, 106, Japan

    Masayasu Ishikawa

Authors
  1. Yuji Furukawa
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  2. Shinji Wada
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  3. Kazuo Miyatani
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  4. Toshiro Tanaka
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  5. Manabu Fukugauchi
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  6. Masayasu Ishikawa
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Editor information

Editors and Affiliations

  1. Department of Electronics, Faculty of Engineering, Kyushu University, Higashi-Ku, Fukuoka 812, Japan

    Kaoru Yamafuji

  2. Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo 135, Japan

    Tadataka Morishita

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© 1995 Springer-Verlag Tokyo

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Cite this paper

Furukawa, Y., Wada, S., Miyatani, K., Tanaka, T., Fukugauchi, M., Ishikawa, M. (1995). NMR Study of the Magnetism and Superconductivity in Cu1+xCo2−xS4. In: Yamafuji, K., Morishita, T. (eds) Advances in Superconductivity VII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68535-7_34

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  • DOI: https://doi.org/10.1007/978-4-431-68535-7_34

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68537-1

  • Online ISBN: 978-4-431-68535-7

  • eBook Packages: Springer Book Archive

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