Centers & Labs

RIKEN Center for Emergent Matter Science

Quantum Matter Theory Research Team

Team Leader: Akira Furusaki (D.Sci.)
Akira  Furusaki(D.Sci.)

Quantum Matter Theory Research Team theoretically studies emergent quantum phenomena of strongly correlated electrons in transition metal oxides, molecular conductors, frustrated quantum magnets, and topological insulators and superconductors, etc. We construct effective models for interacting electrons in materials of interest and study their physical properties such as magnetism and transport using both analytical and numerical methods.

Main Research Field

Mathematical and physical sciences

Related Research Fields

Interdisciplinary science and engineering


  • Theoretical condensed matter physics
  • Quantum transport phenomena
  • Magnetism
  • Superconductivity

Selected Publications

  1. Yang, B.J., Bojesen, T.A., Morimoto, T., Furusaki, A.:
    "Topological semimetals protected by off-centered symmetries in nonsymmorphic crystals"
    Phys. Rev. B 95, 075135 (2017).
  2. Seabra, L., Sindzingre, P., Momoi, T., Shannon, N.:
    "Novel phases in a square-lattice frustrated ferromagnet: 1/3-magnetization plateau, helicoidal spin liquid, and vortex crystal"
    Phys. Rev. B 93, 085132 (2016).
  3. Tsuchiizu, M., Yoshioka, H., Seo, H.:
    "Phase competition, solitons, and domain walls in neutral-ionic transition systems"
    J. Phys. Soc. Jpn. 85, 104705 (2016).
  4. Janson, O., Furukawa, S., Momoi, T., Sindzingre, P., Richter J., Held, K.:
    "Magnetic behavior of volborthite Cu3V2O7(OH)2⋅2H2O determined by coupled trimers rather than frustrated chains"
    Phys. Rev. Lett. 117, 037206 (2016).
  5. Kato, Y., Onoda, S.:
    "Numerical evidence of quantum melting of spin ice: quantum-to-classical crossover"
    Phys. Rev. Lett. 115, 077202 (2015).
  6. Morimoto, T., Furusaki, A., Nagaosa, N.:
    "Topological magnetoelectric effects in thin films of topological insulators"
    Phys. Rev. B 92, 085113 (2015).
  7. Morimoto, T., Furusaki, A., Mudry, C.:
    "Breakdown of the topological classification Z for gapped phases of noninteracting fermions by quartic interactions"
    Phys. Rev. B 92, 125104 (2015).
  8. Yang, B.J., Morimoto, T., Furusaki, A.:
    "Topological charges of three-dimensional Dirac semimetals with rotation symmetry"
    Phys. Rev. B 92, 165120 (2015).
  9. Naka, M., Seo, H.:
    "Long-period charge correlations in charge-frustrated molecular theta-(BEDT-TTF)2X"
    J. Phys. Soc. Jpn. 83, 053706 (2014).
  10. Morimoto, T., Furusaki, A.:
    "Topological classification with additional symmetries from Clifford algebras"
    Phys. Rev. B 88, 125129 (2013).

Lab Members

Principal Investigator

Akira Furusaki
Team Leader

Core Members

Tsutomu Momoi
Senior Research Scientist
Shigeki Onoda
Senior Research Scientist
Hitoshi Seo
Senior Research Scientist
Owen Benton John
Postdoctoral Researcher
Yusuke Horinouchi
Special Postdoctoral Researcher

Contact information

Main Research Building 3F, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

Email: furusaki [at]

Related links

Recent research results

October 28, 2016: RIKEN RESEARCH
The search for disorder in order