Cross-Correlated Materials Research Group, Emergent Materials Department, RIKEN Advanced Science Institute

CMRG home

The CMRG has been moved to the new Center, RIKEN Center for Emergent Matter Science (CEMS) from April 1st.

Members (CMRG)

Yoshinori TOKURA



Yoshinori TOKURA

Research Field

Materials Physics


Tokura & Onose Lab.

Education & Professional Experience

Mar. 1976 B. S. , Dept. of Applied Physics, University of Tokyo
Mar. 1981 Ph. D. , Dept. of Applied Physics, University of Tokyo
Apr. 1981 - Jul. 1984 Research Associate, Dept. of Applied Physics, University of Tokyo
Aug. 1984 - Jun. 1986 Lecturer, Dept. of Applied Physics, University of Tokyo
Jul. 1986 - Dec. 1994 Associate Professor, Dept. of Physics, University of Tokyo
Jul. 1993 - Mar. 2002 Group Leader, Joint Research Center for Atom Technology (JRCAT)
Jan. 1994 - Mar. 1995 Professor, Dept. of Physics, University of Tokyo
Apr. 1995 - present Professor, Dept. of Applied Physics, University of Tokyo
Apr. 2001 - Mar. 2008 Director, Correlated Electron Research Center (CERC), AIST
Oct. 2001 - Sep. 2006 Research Director, Tokura Spin Superstructure, ERATO-JST
Oct. 2006 - present Research Director, Tokura Multiferroics Project, ERATO-JST
Oct. 2007 - present Group Director, Cross-Correlated Materials Research Group (CMRG), Advanced Science Institute (ASI), RIKEN
Apr. 2008 - present AIST Fellow, National Institute of Advanced Industrial Science and Technology (AIST)
Apr. 2010 - present Director, Emergent Materials Department, Advanced Science Institute (ASI), RIKEN
Apr. 2010 - present Group Director, Correlated Electron Research Group (CERG), Advanced Science Institute (ASI), RIKEN


The Physical Society of Japan
American Physical Society
The Japan Society of Applied Physics

Social Activities

Member of Science Council of Japan
Editor, Kotaibutsuri

Major Accomplishments

In the field of organic electronic materials, discoveries of one-dimensional exciton-series structure in semiconducting polymers, photo-induced phase transition phenomena in organic molecular/polymeric systems, and exploration of π-electron organic ferroelectrics and related relaxors. In the field of correlated-electron oxide materials, innovation of electron-doped high-temperature (high-Tc) superconductors, establishment of a general rule for high-Tc materials design and its application to new high-Tc materials synthesis, materials exploration and research on the mechanism of colossal magnetoresistance in oxide materials, systematic studies on the Mott transition in perovskite transition-metal oxides, discovery of gigantic nonlinear optical properties in one-dimensional Mott insulators, and so on. Published papers more than 600, including 16 Nature, 17 Science, and 120 Phys.Rev.Lett. articles.


1990Nishina Memorial Prize
1990IBM Japan Science Prize
1991Bernd Matthias Prize
1998Nissan science Prize
2002Asahi Prize
2003Purple Ribbon Medal
2005James C. MacGroddy Prize for New Materials


  1. T. Kimura, T. Goto, H. Shintani, K. Ishizaka, T. Arima, and Y. Tokura,
    "Magnetic control of ferroelectric polarization"
    Nature 426, 140 (2003).
  2. S. Horiuchi, Y. Okimoto, R. Kumai, and Y. Tokura,
    "Quantum Phase Transition in Organic Charge-Transfer Complexes"
    Science 299, 229 (2003).
  3. Y. Taguchi, Y. Oohara, H. Yoshizawa, N. Nagaosa, and Y. Tokura,
    "Spin Chirality, Berry Phase, and Anomalous Hall Effect in a Frustrated Ferromagnet"
    Science 291, 2573 (2001).
  4. E. Saitoh, S. Okamoto, K. T. Takahashi, K. Tobe, K. Yamamoto, T. Kimura, S. Ishihara, S. Maekawa, and Y. Tokura,
    "Observation of orbital waves as elementary excitations in a solid",
    Nature 410, 180 (2001).
  5. Y. Tokura and N. Nagaosa,
    "Orbital Physics in Transition-Metal Oxides"
    Science 288, 462 (2000).
  6. K. -I. Kobayashi, T. Kimura, H. Sawada, K. Terakura, and Y. Tokura,
    "Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure"
    Nature 395, 677-680 (1998).
  7. A. Asamitsu, Y. Tomioka, H. Kuwahara, and Y. Tokura,
    "Current-switching of resistive states in colossal magnetoresistive oxides"
    Nature 388, 50-52 (1997).
  8. T. Kimura, Y. Tomioka, H. Kuwahara, A. Asamitsu, M. Tamura, and Y. Tokura,
    "Interplane tunneling magnetoresistance in a layered manganite crystal"
    Science 274, 1698-1701 (1996).
  9. Y. Tokura, H. Kuwahara, Y. Moritomo, Y. Tomioka, and A. Asamitsu,
    "Competing instabilities and metastable states in (Nd,Sm)1/2Sr1/2MnO3"
    Phys. Rev. Lett. 76, 3184(1996).
  10. Y. Moritomo, A. Asamitsu, H. Kuwahara, and Y. Tokura,
    "Giant Magnetoresistance in Layered Structure of Manganese Oxides"
    Nature 380, 141-144 (1996).
  11. H. Kuwahara, Y. Tomioka, A. Asamitsu, Y. Moritomo, and Y. Tokura,
    "A First-Order Phase Transition Induced by a Magnetic Field"
    Science 270, 961-963 (1995).
  12. Y. Tokura, H. Takagi, and S. Uchida,
    "A superconducting copper oxide compound with electrons as the charge carriers"
    Nature 337, 345-347 (1989).