Strong Correlation Physics Research Group

Our group investigates a variety of emergent phenomena in strongly correlated electron systems, which cannot be understood within the framework of conventional semiconductor/metal physics, to construct a new scheme for the relevant science. In particular, we focus on transport and optical properties in non-trivial spin/orbital structures, aiming at clarifying the correlation between the responses and spin/orbital state. In addition, we investigate electron systems with strong spin-orbit interaction, unraveling its impact on transport phenomena and other electronic properties.

Research Fields

Physics / Materials Sciences

Research Subjects

• Mottronics
• Magnetoelectric effects
• Topological electronics

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. H. Sakai, et al. Displacement-Type Ferroelectricity with Off-Center Magnetic Ions in Perovskite Sr1-xBaxMnO3, Phys. Rev. Lett. 2011, 107, 137601.
4. K. Ishizaka, et al. Giant Rashba-type spin splitting in bulk BiTeI, Nature Mater. 2011, 10, 521.
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. Tokunaga, et al. Multiferroic M-type hexaferrites with a room-temperature conical state and magnetically controllable spin helicity, Phys. Rev. Lett. 2010, 105, 257201.
7. Y. Onose, et al. Observation of the magnon Hall effect, Science 2010, 329, 297.
8. X. Z. Yu, et al. Real-space observation of a two-dimensional skyrmion crystal, Nature 2010, 465, 901.
9. M. Nakamura, et al. Magnetically tunable metal-insulator superlattics, Adv. Mater. 2010, 22, 876.
10. F. Kagawa, S. Horiuchi, M. Tokunaga, J. Fujioka, Y. Tokura, Ferroelectricity in a one-dimensional organic quantum magnet, Nature Phys. 2010, 6, 169.