Controlling the superconducting layers in misfit layered chalcogenide superconductors

ORAL

Abstract

wo-dimensional (2D) superconductivity has been one of the top topics in condensed matter and the new materials as well as techniques have been proposed and studied intensively. Recent finding on intercalated transition metal dichalcogenides (TMD) show 2D behavior [1, 2]. Misfit layered chalcogenides are naturally grown crystals that host 2D electrons. The materials consist of cubic monochalcogenide insulating layer and hexagonal TMD layers that dominate the electronic states.

In this work, we report the numbers of TMD layers can be modulated and the resultant modulation of electronic states are observed. We also successfully synthesized NbSe2 trilayer series, which is expected to own very clean Ising superconducting layer in between the neighboring NbSe2 layers.





[1] H. Zhang et al., Nat. Phys. 18, 1425 (2022).

[2] D. Zhao et al., Nat. Phys. (2023) (https://doi.org/10.1038/s41567-023-02202-4)

* KAKENHI 23H04870

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Presenters

  • Kaya Kobayashi

    Okayama Univ

Authors

  • Kaya Kobayashi

    Okayama Univ

  • Masaharu Shirata

    Okayama University

  • Koichiro Arioka

    Okayama University

  • Yuki Itahashi

    Univ of Tokyo, Department of Applied Physics, The University of Tokyo; RIKEN

  • Yoshihiro Iwasa

    Univ of Tokyo, The University of Tokyo, The University of Tokyo, RIKEN CEMS, Univ of Tokyo, RIKEN

  • Yuto Fujiwara

    Okayama University