Breaking of spatial inversion symmetry in anti-parallel-stacked ReSe<sub>2</sub>

ORAL

Abstract

The development of mechanical exfoliation and dry-transfer techniques has made it possible to stack two-dimensional flakes dynamically and fabricate new materials that cannot be synthesized through thermodynamic processes. In such composite flakes, changes in the symmetry of the total system lead to a variety of emergent physical properties that would not appear in each component flake alone. Here, we fabricated an anti-parallel-stacked bilayer ReSe2, which is expected to lose the spatial-inversion-symmetry by stacking the centrosymmetric monolayer flakes in the opposite directions. By micro-focused angle-resolved photoemission spectroscopy and second harmonic generation, we successfully observed the band dispersions and the artificially induced spatial inversion symmetry breaking in the anti-parallel-stacked bilayer ReSe2. Our result demonstrates the potential for creating new materials that can exhibit spintronic functions and Berry-curvature-related physical phenomena by controlling the presence or absence of spatial inversion symmetry.

*This research was partly supported by a CREST project (Grants No. JP-MJCR15F3, No. JPMJCR16F2, No. JPMJCR18T1, and No. JPMJCR20B4) from the Japan Science and Technology Agency (JST) and Japan Society for the Promotion of Science KAKENHI (Grants-in-Aid for Scienti?c Research) (Grants No. JP20H00127, No. JP20H00354, No. JP20H01834, No. JP21H05232, No. JP21H05233, No. JP21H05234, No. JP21H05235, and No.JP21H05236) and KEK-PF (Proposal No. 2018S2-001, No. 2021S2-001, and No. 2021G141).

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Publication: S. Akatsuka et al., in preparation
M. Kitamura et al., Rev. Sci. Instrum. 93, 033906 (2022).

Presenters

  • Shunsuke Akatsuka

    • Univ of Tokyo

Authors

  • Shunsuke Akatsuka

    • Univ of Tokyo

  • Masato Sakano

    • Univ of Tokyo

  • Takato Yamamoto

    • Univ of Tokyo

  • Takuya Nomoto

    • Univ of Tokyo
    • The University of Tokyo
    • RCAST, Univ of Tokyo
    • University of Tokyo

  • Ryotaro Arita

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

  • Ryoga Murata

    • Tokyo Inst of Tech - Yokohama

  • Takao Sasagawa

    • Tokyo Inst of Tech - Yokohama
    • Tokyo Institute of Technology

  • Kenji Watanabe

    • National Institute for Materials Science
    • Research Center for Functional Materials, National Institute of Materials Science
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Takashi Taniguchi

    • National Institute for Materials Science
    • Kyoto Univ
    • International Center for Materials Nanoarchitectonics, National Institute of Materials Science
    • Kyoto University
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institute For Materials Science
    • NIMS
    • National Institute for Material Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • NIMS Japan

  • Miho Kitamura

    • Photon Factory KEK IMSS
    • KEK-IMSS-PF
    • High Energy Accelerator Research Organization
    • High Energy Accelerator Research Organization (KEK)

  • Koji Horiba

    • QST
    • National Institutes for Quantum Science and Technology

  • Katsuaki Sugawara

    • Tohoku University
    • Department of Physics, Tohoku University

  • Seigo Souma

    • Tohoku University

  • Takafumi Sato

    • Tohoku University
    • WPI-AIMR, Tohoku University

  • Hiroshi Kumigashira

    • Tohoku University

  • Keisuke Shinokita

    • Kyoto Univ - Uji Campus

  • Kazunari Matsuda

    • Kyoto Univ - Uji Campus

  • Satoru Masubuchi

    • Univ of Tokyo
    • Institute of Industrial Science, University of Tokyo

  • Tomoki Machida

    • Univ of Tokyo
    • Institute of Industrial Science, University of Tokyo

  • Kyoko Ishizaka

    • Univ of Tokyo
    • The University of Tokyo
    • University of Tokyo