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


Related Research Fields

Materials Sciences

Research Subjects

  • Transport properties of strongly correlated electron system
  • Magnetism of strongly correlated electron system
  • Topological phases

Selected Publications

  1. Morimoto, T., Furusaki, A.:
    "Weyl and Dirac semimetals with Z2 topological charge"
    Phys. Rev. B 89, 235127 (2014).
  2. Morimoto, T., Furusaki, A.:
    "Topological classification with additional symmetries from Clifford algebras"
    Phys. Rev. B 88, 125129 (2013).
  3. Furukawa, S., Sato, M., Onoda, S., Furusaki, A.:
    "Ground-state phase diagram of a spin-1/2 frustrated ferromagnetic XXZ chain: Haldane dimer phase and gapped/gapless chiral phases"
    Phys. Rev. B 86, 094417 (2012).
  4. Yoshimi, K., Seo, H., Ishibashi, S., Brown, S.E.:
    "Tuning the magnetic dimensionality by charge ordering in the molecular TMTTF salts"
    Phys. Rev. Lett. 108, 096402 (2012).
  5. Momoi T., Sindzingre, P., Kubo, K.:
    "Spin nematic order in multiple-spin exchange models on the triangular lattice"
    Phys. Rev. Lett. 108, 057206 (2012).
  6. Nomura, K., Ryu, S., Furusaki, A., Nagaosa, N.:
    "Cross-correlated responses of topological superconductors and superfluids"
    Phys. Rev. Lett. 108, 026802 (2012).
  7. Onoda, S., Tanaka, Y.:
    "Quantum fluctuations in the effective pseudospin-1/2 model for magnetic pyrochlore oxides"
    Phys. Rev. B 83, 094411 (2011).
  8. Furukawa, S., Sato, M., Onoda, S.:
    "Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates"
    Phys. Rev. Lett. 105, 257205 (2010).
  9. Ryu, S., Schnyder, A.P., Furusaki, A., Ludwig, A.W.W.:
    "Topological insulators and superconductors: ten-fold way and dimensional hierarchy"
    New J. Phys. 12, 065010 (2010).
  10. Schnyder, A.P., Ryu, S., Furusaki, A., Ludwig, A.W.W.:
    "Classification of topological insulators and superconductors in three spatial dimensions"
    Phys. Rev. B 78, 195125 (2008).

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
Troels Bojesen
Postdoctoral Researcher
Owen Benton John
Postdoctoral Researcher
Daisuke Takahashi
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