Antiferromagnetic ordering of the incommensurate organic superconductor (MDT-TS)(AuI2)0.441 with a high spin-flop field

Tadashi Kawamoto, Yoshimasa Bando, Takehiko Mori, Takako Konoike, Yamaguchi Takahide, Taichi Terashima, Shinya Uji, Kazuo Takimiya, and Tetsuo Otsubo
Phys. Rev. B 77, 224506 – Published 13 June 2008
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  • INTRODUCTION
  • EXPERIMENT
  • RESULTS AND DISCUSSION
  • CONCLUSION
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    The magnetic torque and high-pressure transport properties of the incommensurate organic superconductor (MDT-TS)(AuI2)0.441 are investigated, where MDT-TS is 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6tetrathiapentalene. The magnetic torque provides unquestionable evidence of an antiferromagnetic ordered state with a high spin-flop field of 6.9 T at ambient pressure. Hydrostatic pressure suppresses this insulating state and induces superconductivity, where the superconducting transition temperature rises to the maximum, 4.9 K at 1.27 GPa; the superconducting phase exists between 1.0 and 1.8 GPa above 1.5 K.

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    • Received 29 February 2008

    DOI:https://doi.org/10.1103/PhysRevB.77.224506

    ©2008 American Physical Society

    Authors & Affiliations

    Tadashi Kawamoto* and Yoshimasa Bando

    • Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan

    Takehiko Mori

    • Department of Chemistry and Materials Science, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan

    Takako Konoike, Yamaguchi Takahide, Taichi Terashima, and Shinya Uji

    • National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan

    Kazuo Takimiya and Tetsuo Otsubo

    • Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan

    • *kawamoto@o.cc.titech.ac.jp

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    Issue

    Vol. 77, Iss. 22 — 1 June 2008

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