Cross-Correlated Materials Research Group

Group Director

Yoshinori Tokura

  • D.Eng.
  • Yoshinori Tokura
  • Brief resume
    1981
    D. Eng., University of Tokyo
    1986
    Associate Professor, University of Tokyo
    1994
    Professor, Department of Physics, University of Tokyo
    1995
    Professor, Department of Applied Physics, University of Tokyo
    2006
    Research Director, ERATO Tokura Multiferroics Project, Japan Science and Technology Agency (-current)
    2007
    Group Director, Cross-Correlated Materials Research Group, RIKEN (-current)
    2008
    AIST Fellow, National Institute of Advanced Industrial Science and Technology (-current)
    2010
    Director, Emergent Materials Department, RIKEN (-current)
    2010
    Group Director, Correlated Electron Research Group, RIKEN (-current)
    2012
    Group Director, Functional Emergent-matter Research Group, RIKEN (-current)

Outline

We study various emergent phenomena arising from the multiple degrees of freedom (charge, spin, orbital) of strongly correlated electrons in transition-metal compounds. Since strongly-correlated electron systems undergo ultrafast phase change among quantum solid, liquid and liquid-crystal phases while drastically changing electric, magnetic and optical properties, we design novel cross-correlation functions (responses to non-conjugate external stimuli, such as magnetization-electric field and polarization-magnetic field), and explore new materials as well as device concepts by exploiting these phase changes. We aim to construct a framework of cross-correlation physics by combining theoretical designs based on relativistic field theory and computer simulations, artificial superstructure fabrication techniques, high pressure synthesis techniques, and single crystal synthesis techniques in a strategic manner.

Selected Publications

  1. H. Y. Hwang, et al. Emergent phenomena at oxide interfaces, Nature Mater. 2012, 11, 103.
  2. Y. Takahashi, R. Shimano, Y. Kaneko, H. Murakawa, Y. Tokura, Magnetoelectric resonance with electromagnons in a perovskite helimagnet, Nature Phys. 2012, 8, 121.
  3. D. Xiao, W.G. Zhu, Y. Ran, N. Nagaosa, S. Okamoto, Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures, Nature Commu. 2011, 2, 596.
  4. H. Sakai, et al. Displacement-Type Ferroelectricity with Off-Center Magnetic Ions in Perovskite Sr1-xBaxMnO3, Phys. Rev. Lett. 2011, 107, 137601.
  5. X. Z. Yu, et al. Near room-temperature formation of a skyrmion crystal in thin-films of the helimagnet FeGe, Nature Mater. 2011, 10, 106.
  6. Y. Onose, et al. Observation of the magnon Hall effect, Science 2011, 329, 297.
  7. X. Z. Yu, et al. Real-space observation of a two-dimensional skyrmion crystal, Nature 2010, 465, 901.
  8. M. Nakamura, et al. Magnetically tunable metal-insulator superlattics, Adv. Mater. 2010, 22, 876
  9. W. Koshibae, N. Furukawa, N. Nagaosa, Real-Time Quantum Dynamics of Interacting Electrons: Self-Organized Nanoscale Structure in a Spin-Electron Coupled System, Phys. Rev. Lett. 2009, 103, 266402.
  10. Y. Tokunaga, et al. Composite domain walls in a multiferroic perovskite ferrite, Nature Mater. 2009, 8, 558.

Core Members

Principal Investigator add delete
Yoshinori Tokura Group Director (Director, Emergent Materials Department)    
Staff Scientist add delete
Postdoctoral Fellow add delete
Student Trainee add delete
Technical Assistant add delete
Administrative Assistant add delete
Visiting Research Staff add delete
Other Staff add delete

( ) indicates primary affiliation in RIKEN. Please see Research Team page for other members.

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