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Cross-Correlated Materials Research Group
Yoshinori TOKURA
Group Director
Yoshinori TOKURA (D.Eng.)
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Research Areas

It is well-known that the magnetization is induced by a magnetic field and the polarization by an electric field. In sharp contrast to these trivial cases, cross correlation means the off-diagonal responses between magnetization and electric field, for example. This effect is realized in the strongly correlated systems, where the various degrees of freedom of electrons, i.e., charge, spin, and orbital, are entangled by the many-body effects. These strongly correlated electronic systems show the rapid phase changes among solid-liquid-liquid crystal associated with the drastic changes of magnetic, electrical, and optical properties. We will design the novel cross-correlation functionalities in these many-body electron systems exploring new materials to create the new device concepts.

Research Subject

  1. Magnetic ferroelectrics
  2. Cross-correlated device
  3. Topological Insulators
  4. Spin texture

Related links

  1. RIKEN Advanced Science Institute Website_Laboratories PageNew Window
  2. Individual Website Laboratory PageNew Window

Press release

July 9, 2010
Emergent resistance network suggests mechanism for colossal magnetoresistanceNew Window

List of Selected Publications

  1. H. Y. Hwang, Y. Iwasa, M. Kawasaki, B. Keimer, N. Nagaosa & Y. Tokura.:
    "Emergent phenomena at oxide interfaces"
    Nature Mater., 11, 103-113 (2012)
  2. Y. Takahashi, R. Shimano, Y. Kaneko, H. Murakawa, and Y. Tokura.:
    "Magnetoelectric resonance with electromagnons in a perovskite helimagnet"
    Nature Physics 8, 121 (2012)
  3. D. Xiao, W.G. Zhu, Y. Ran, N. Nagaosa, and S. Okamoto.:
    "Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures"
    Nature Communications 2, 596 (2011)
  4. H. Sakai, J. Fujioka, T. Fukuda, D. Okuyama, D. Hashizume, F. Kagawa, H. Nakao, Y. Murakami, T. Arima, A. Q. R. Baron, Y. Taguchi, and Y. Tokura.:
    "Displacement-Type Ferroelectricity with Off-Center Magnetic Ions in Perovskite Sr1-xBaxMnO3"
    Phys. Rev. Lett. 107, 137601 (2011)
  5. Yu, X. Z., Kanazawa, N., Onose, Y., Kimoto, K., Zhang, W. Z., Ishiwata, S., Matsui, Y., and Tokura, Y.:
    "Near room-temperature formation of a skyrmion crystal in thin-films of the helimagnet FeGe"
    Nature Materials, Vol. 10, 106-109 (2011)
  6. Onose, Y., Ideue, T., Katsura, H., Shiomi, Y., Nagaosa, N., and Tokura, Y.:
    "Observation of the magnon Hall effect"
    Science, Vol. 329, 297-299 (2010)
  7. Yu, X. Z., Onose, Y., Kanazawa, N., Park, J. H., Han, J. H., Matsui, Y., Nagaosa, N., and Tokura, Y.:
    "Real-space observation of a two-dimensional skyrmion crystal"
    Nature, Vol. 465, 901-904 (2010)
  8. Nakamura, M., Okuyama, D., Lee, J. S., Arima, T., Wakabayashi, Y., Kumai, R., Kawasaki, M., and Tokura, Y.:
    "Magnetically tunable metal-insulator superlattics."
    Adv. Mater. 22, 876 (2010)
  9. W. Koshibae, N. Furukawa, and N. Nagaosa,:
    "Real-Time Quantum Dynamics of Interacting Electrons: Self-Organized Nanoscale Structure in a Spin-Electron Coupled System"
    Phys. Rev. Lett. 103, 266402 (2009)
  10. Y. Tokunaga, N. Furukawa, H. Sakai, Y. Taguchi, T. Arima, and Y. Tokura.:
    "Composite domain walls in a multiferroic perovskite ferrite"
    Nature Materials 8, 558 - 562 (2009).

Members

Principal Investigator

Yoshinori TOKURA
Group Director


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