Cross-Correlated Materials Research Group
Group Director
Yoshinori TOKURA (D.Eng.)
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.
- 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) - 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) - 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) - 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) - 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) - A. Shitade, H. Katsura, X. L. Qi, S. C. Zhang, and N. Nagaosa
"Quantum Spin Hall Effect in a Transition Metal Oxide Na2IrO3"
Phys. Rev. Lett. 102, 256403 (2009) - H. Sakai, Y. Taguchi, and Y. Tokura
"Impact of Bicritical Fluctuation on Magnetocaloric Phenomena in Perovskite Manganites"
J. Phys. Soc. Jpn. 78, 113708 (2009) - K. S. Takahashi, M. Onoda, M. Kawasaki, N. Nagaosa, and Y. Tokura
"Control of the Anomalous Hall Effect by Doping in Eu1-xLaxTiO3 Thin Films"
Phys. Rev. Lett. 103, 057204 (2009) - 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). - Ishiwata, S., Taguchi, Y., Murakawa, H., Onose, Y., and Tokura, Y.:
"Low-magnetic-field control of electric polarization vector in a helimagnet."
Science, Vol. 319, 1643-1646 (2008)