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Chief Scientist Laboratories Condensed Matter Theory Laboratory

Chief Scientist: Akira Furusaki (D.Sc.)

Research Summary

Akira  Furusaki(D.Sc.)

We aim to understand theoretically various properties of materials of macroscopic scale from the physical laws that govern microscopic world. Many-electron systems having infinite degrees of freedom exhibit rich physical phenomena: they can have phases with spontaneously broken symmetry and transitions among these phases. A typical example is offered by magnetism and superconductivity in strongly-correlated electron systems, such as transition metal oxides and molecular conductors, which are the main research subjects of our laboratory. Our recent research subjects include unconventional ordered states and spin liquids in strongly frustrated quantum magnets and other new kinds of quantum phases like topological insulators and topological superconductors. Furthermore, we study quantum phenomena in mesoscopic systems of nanometer scale and statistical physics of random systems.

Main Research Fields

  • Mathematical & Physical Sciences

Related Research Fields

  • Interdisciplinary Science & Engineering
  • Physics


  • Condensed Matter Theory
  • Electric Transport
  • Magnetism
  • Superconductivity

Selected Publications

  • 1. Aksoy, O.M., Mudry, C., Furusaki, A., Tiwari, A.:
    "Lieb-Schultz-Mattis anomalies and web of dualities induced by gauging in quantum spin chains"
    SciPost Phys. 16, 022 (2024).
  • 2. Momoi, T.:
    "Dynamics of quantum spin-nematics: Comparisons with canted antiferromagnets"
    Phys. Rev. Research 6, 013169 (2024).
  • 3. Fuji Y., Furusaki, A.:
    "Bridging three-dimensional coupled-wire models and cellular topological states: Solvable models for topological and fraction orders"
    Phys. Rev. Research 5, 043108 (2023).
  • 4. Yao, Y., Furusaki, A.:
    "A geometric approach to Lieb-Schultz-Mattis theorem without translation symmetry under inversion or rotation symmetry"
    Phys. Rev. B 106, 045125 (2022).
  • 5. Yao, Y., Furusaki, A.:
    "Parafermionization, bosonization, and critical parafermionic theories"
    J. High Energy Phys. 2021, 285 (2021).
  • 6. Naka, M., Motomo, Y., Seo, H.:
    "Perovskite as a spin current generator"
    Phys. Rev. B 103, 125114 (2021).
  • 7. Wang, R.-B., Furusaki, A., Starykh, O.A.:
    "Majorana end states in an interacting quantum wire"
    Phys. Rev. B 102, 165147 (2020).
  • 8. Lee, E., Furusaki, A., Yang, B.-J.:
    "Fractional charge bound to a vortex in two-dimensional topological crystalline insulators"
    Phys. Rev. B 101, 241109 (2020).
  • 9. Naka, M., Hayami, S., Kusunose, H., Yanagi, Y., Motome, Y., Seo, H.:
    "Spin current generation in organic antiferromagnets"
    Nature Commun. 10, 4305 (2019).
  • 10. Mudry, C., Furusaki, A., Morimoto, T., Hikihara, T.:
    "Quantum phase transitions beyond Landau-Ginzburg theory in one-dimensional space revisited"
    Phys. Rev. B 99, 205153 (2019).

Recent Research Results

Annual research report

Related Links

Lab Members

Principal investigator

Akira Furusaki
Chief Scientist

Core members

Tsutomu Momoi
Senior Research Scientist
Shigeki Onoda
Senior Research Scientist
Hitoshi Seo
Senior Research Scientist
Yuki Yamazaki
Postdoctoral Researcher
Tatsuya Amitani
Junior Research Associate

Contact Information

2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Email: furusaki [at] riken.jp