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Discovery of superconductivity in quasicrystal

Author

Listed:
  • K. Kamiya

    (Nagoya University
    UACJ Corporation)

  • T. Takeuchi

    (Toyota Technological Institute)

  • N. Kabeya

    (Tohoku University)

  • N. Wada

    (Nagoya University)

  • T. Ishimasa

    (Toyota Physical and Chemical Research Institute)

  • A. Ochiai

    (Tohoku University)

  • K. Deguchi

    (Nagoya University)

  • K. Imura

    (Nagoya University)

  • N. K. Sato

    (Nagoya University)

Abstract

Superconductivity is ubiquitous as evidenced by the observation in many crystals including carrier-doped oxides and diamond. Amorphous solids are no exception. However, it remains to be discovered in quasicrystals, in which atoms are ordered over long distances but not in a periodically repeating arrangement. Here we report electrical resistivity, magnetization, and specific-heat measurements of Al–Zn–Mg quasicrystal, presenting convincing evidence for the emergence of bulk superconductivity at a very low transition temperature of $$T_{\rm c} \cong 0.05$$ T c ≅ 0.05 K. We also find superconductivity in its approximant crystals, structures that are periodic, but that are very similar to quasicrystals. These observations demonstrate that the effective interaction between electrons remains attractive under variation of the atomic arrangement from periodic to quasiperiodic one. The discovery of the superconducting quasicrystal, in which the fractal geometry interplays with superconductivity, opens the door to a new type of superconductivity, fractal superconductivity.

Suggested Citation

  • K. Kamiya & T. Takeuchi & N. Kabeya & N. Wada & T. Ishimasa & A. Ochiai & K. Deguchi & K. Imura & N. K. Sato, 2018. "Discovery of superconductivity in quasicrystal," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-017-02667-x
    DOI: 10.1038/s41467-017-02667-x
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    Cited by:

    1. Yuki Tokumoto & Kotaro Hamano & Sunao Nakagawa & Yasushi Kamimura & Shintaro Suzuki & Ryuji Tamura & Keiichi Edagawa, 2024. "Superconductivity in a van der Waals layered quasicrystal," Nature Communications, Nature, vol. 15(1), pages 1-7, December.

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