Centers & Labs

RIKEN Center for Emergent Matter Science

Strong Correlation Materials Research Team

Team Leader: Yasujiro Taguchi (D.Eng.)
Yasujiro  Taguchi(D.Eng.)

We aim to study strongly correlated electron systems, such as transition-metal oxides, that show gigantic cross-correlation response. Specifically, we try to explore new materials, including multiferroic, thermoelectric, and magnetocaloric materials, by using various materials synthesis techniques such as high pressure synthesis technique. Also, we search for new magnetic materials that show non-trivial spin textures with long periodicity, and try to clarify the correlation between the spin texture and charge dynamics.

Main Research Field

Physics

Related Research Fields

Materials Sciences

Research Subjects

  • Exploration of gigantic magnetoelectric response and cross-control
  • Magnetotransport phenomena in non-trivial spin texture
  • Exploration of novel thermoelectric/magnetocaloric materials

Selected Publications

  1. Tokunaga, Y., Yu, X.Z., White, J.S., Ronnow, H. M., Morikawa, D., Taguchi, Y., and Tokura Y.:
    "A new class of chiral materials hosting magnetic skyrmions beyond room temperature"
    Nature Communications 6, 7638 (2015)
  2. Kriener, M., Kikkawa, A., Suzuki, T., Akashi, R., Arita, R., Tokura, Y. and Taguchi, Y.:
    "Modification of the electronic structure and thermoelectric properties of hole-doped tungsten dichalcogenides"
    Phys. Rev. B 91, 075205 (2015)
  3. Tokunaga, Y., Taguchi, Y., Arima, T., and Tokura, Y.:
    "Magnetic biasing of a ferroelectric hysteresis loop in a multiferroic orthoferrite"
    Phys. Rev. Lett. 112, 037203 (2014)
  4. Choudhury, D., Suzuki, T., Tokura, Y., and Taguchi, Y.:
    "Tuning structural instability toward enhanced magnetocaloric effect around room temperature in MnCo1-xZnxGe"
    Scientific Reports 4, 7544-1 — 7544-6, (2014)
  5. Tokunaga, Y., Taguchi, Y., Arima, T., and Tokura, Y.:
    "Electric field induced generation and reversal of ferromagnetic moment in ferrites"
    Nature Physics 8, 838-844 (2012)
  6. Sakai, H., Fujioka, J., Fukuda, T., Okuyama, D., Hashizume, D., Kagawa, F., Nakao, H., Murakami, Y., Arima, T., Baron, A. Q. R.、Taguchi, Y., and Tokura, Y.:
    "Displacement-Type Ferroelectricity with Off-Center Magnetic Ions in Perovskite Sr1-xBaxMnO3"
    Phys. Rev. Lett. 107, 137601 (2011).
  7. Ishiwata, S., Tokunaga, M., Kaneko, Y., Okuyama, D., Tokunaga, Y., Wakimoto, S., Kakurai, K., Arima, T., Taguchi, Y., and Tokura, Y.:
    "Versatile helimagnetic phases under magnetic fields in cubic perovskite SrFeO3"
    Phys. Rev. B 84, 054427 (2011)
  8. Suzuki, T., Bahramy, M. S., Arita, R., Taguchi, Y., and Tokura, Y.:
    "Doping control and thermoelectric properties of R1-xAxZnSbO(R=La, Ce; A=Ca, Sr)"
    Physical Review B 83, 035204 (2011).
  9. Tokunaga, Y., Kaneko, Y., Okuyama, D., Ishiwata, S., Arima, T., Wakimoto, S., Kakurai, K., Taguchi,Y., and Tokura, Y.:
    "Multiferroic M-type hexaferrites with a room-temperature conical state and magnetically controllable spin helicity"
    Phys. Rev. Lett.105, 257201 (2010).
  10. Tokunaga, Y., Furukawa, N., Sakai, H., Taguchi, Y., Arima, T., and Tokura, Y.:
    "Composite domain walls in a multiferroic perovskite ferrite"
    Nature Materials 8, 558-562 (2009).

Lab Members

Principal Investigator

Yasujiro Taguchi
Team Leader

Core Members

Markus Wilhelm Bernhard Kriener
Research Scientist
Akiko Kikkawa
Technical Scientist
Kosuke Karube
Postdoctoral Researcher
Vilmos Kocsis
Postdoctoral Researcher
Satoshi Shimano
Visiting Scientist
Junya Takashima
Visiting Scientist

Contact information

Frontier Research Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Tel: +81-(0)48-467-9612

Email: y-taguchi [at] riken.jp

Related links

Recent research results

January 6, 2017: RIKEN RESEARCH
Sturdy skyrmions stack up
July 2, 2015: Press Release
Evidence for stable room-temperature skyrmions