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RIKEN Center for Emergent Matter Science Low-Dimensional Quantum Phases Research Unit

Unit Leader: Takuro Sato (Ph.D.)

Research Summary

Michihisa Yamamoto

Low-dimensional systems, such as organic conductors and two-dimensional materials, provide an ideal platform for realizing a wide variety of quantum phases driven by strong electronic correlations. In our unit, we take advantage of the high controllability of these systems to develop novel devices in which spatial inversion and time-reversal symmetries are strategically incorporated. Using these devices, we explore emergent quantum phases associated with symmetry breaking, and also investigate nonlinear and nonequilibrium responses that become prominent in low-dimensional and low-symmetry environments, aiming to uncover new functionalities.

Main Research Fields

  • Mathematical & Physical Sciences

Related Research Fields

  • Engineering
  • Magnetism, superconductivity and strongly correlated systems-related
  • Basic Section
  • Basic Section

Keywords

  • Chirality
  • Strongly correlated electron systems
  • Organic conductors
  • Two-dimensional materials

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.

  • 1.* Sato, T., Goto, H., and Yamamoto, H. M.:
    "Sturdy spin-momentum locking in a chiral organic superconductor"
    Phys. Rev. Research 7, 023056 (2025).
  • 2.Aizawa, H., Sato, T., Maki-Yonekura, S., Yonekura, K., Takaba, K., Hamaguchi, T., Minato, T., and Yamamoto, H. M.:
    "Enantioselectivity of discretized helical supramolecule consisting of achiral cobalt phthalocyanines via chiral-induced spin selectivity effect"
    Nat. Commun. 14, 4530 (2023).
  • 3.* Malatong, R., Sato, T., Kumsampao, J., Minato, T., Suda, M., Promarak, V., and Yamamoto, H. M.:
    "Highly Durable Spin Filter Switching Based on Self‐Assembled Chiral Molecular Motor"
    Small 19, 2302714, (2023).
  • 4.Sato, T., Koshibae, W., Kikkawa, A., Taguchi, Y., Nagaosa, N., Tokura, Y., and Kagawa, F.:
    "Nonthermal current-induced transition from skyrmion lattice to nontopological magnetic phase in spatially confined MnSi"
    Phys. Rev. B 106, 144425 (2022).
  • 5.* Sato, T., Miyagawa, K., Tamura, M., and Kanoda, K.:
    "Anomalous 2D-confined electronic transport in layered organic charge-glass systems"
    Phys. Rev. Lett. 125, 146601 (2020).
  • 6.Sato, T., Kikkawa, A., Taguchi, Y., Tokura, Y., and Kagawa, F.:
    "Mode-lock phenomena of the current-induced skyrmion-lattice motion in microfabricated MnSi"
    Phys. Rev. B 102, 180411(R) (2020).
  • 7.Sato, T., Koshibae, W., Kikkawa, A., Yokouchi, T., Oike, H., Taguchi, Y., Nagaosa, N., Tokura, Y., and Kagawa, F.:
    "Slow steady flow of a skyrmion lattice in a confined geometry probed by narrow-band resistance noise"
    Phys. Rev. B 100, 094410 (2019).
  • 8.* Sato, T., Kitai, K., Miyagawa, K., Tamura, M., Ueda, A., Mori, H., and Kanoda, K.:
    "Strange metal from a frustration-driven charge order instability"
    Nat. Mater. 18, 229 (2019).
  • 9.* Sato, T., Miyagawa, K., and Kanoda, K.:
    "Electronic crystal growth"
    Science 357, 1378 (2017).
  • 10.Sato, T., Kagawa, F., Kobayashi, K., Miyagawa, K., Kanoda, K., Kumai, R., Murakami, Y., and Tokura, Y.:
    "Emergence of nonequilibrium charge dynamics in a charge-cluster glass"
    Phys. Rev. B 89, 121102(R) (2014).

Lab Members

Principal investigator

Takuro Sato
Unit Leader

Contact Information

2-1 Hirosawa, Wako, Saitama
Email: takuro.sato@riken.jp

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