RIKEN Center for Emergent Matter Science Strong Correlation Physics Research Group
Group Director: Yoshinori Tokura (D.Eng.)
Research Summary

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.
Main Research Fields
- Mathematical & Physical Sciences
Related Research Fields
- Interdisciplinary Science & Engineering
- Chemistry
Keywords
- strongly correlated electrons system
- colossal magnetoresistance
- high-temperature superconductors
- multiferroics
- topological insulators
Selected Publications
- 1.
Birch, T. M., Belopolski, I., Fujishiro, Y., Kawamura, M., Kikkawa, A., Taguchi, Y., Hirschberger, M., Nagaosa, N., and Tokura, Y.:
"Dynamic transition and Galilean relativity of current-driven skyrmions"
Nature, 633, 554 (2024). - 2.
Ueda, K., Yu, T., Hirayama, M., Kurokawa, R., Nakajima, T., Saito, H., Kriener, M., Hoshino, M., Hashizume, D., Arima, T.-h., Arita, R., and Tokura, Y.:
"Colossal negative magnetoresistance in field-induced Weyl semimetal of magnetic half-Heusler compound",
Nat. Commun. 14, 6339 (2023). - 3.
Hori, T., Kanazawa, N., Hirayama, M., Fujiwara, K., Tsukazaki, A., Ichikawa, M., Kawasaki, M., and Tokura, Y.:
"A Noble-Metal-Free Spintronic System with Proximity-Enhanced Ferromagnetic Topological Surface State of FeSi above Room Temperature"
Adv. Mater. 35, 2206801 (2022). - 4.
Kitaori, A., Kanazawa, N., Yokouchi, T., Kagawa, F., Nagaosa, N., and Tokura, Y.:
"Emergent electromagnetic induction beyond room temperature"
Proc. Natl. Acad. Sci. U.S.A. 118, e2105422118 (2021). - 5.
Fujishiro, Y., Kanazawa, N., Kurihara, R., Ishizuka, H., Hori, T., Yasin, F. S., Yu, X.Z., Tsukazaki, A., Ichikawa, M., Kawasaki, M., Nagaosa, N., Tokunaga, M., and Tokura, Y.:
"Giant anomalous Hall effect from spin-chirality scattering in a chiral magnet"
Nat. Commun., 12, 317 (2021). - 6.
Yokouchi, T., Kagawa, F., Hirschberger, M., Otani, Y., Nagaosa, N., and Tokura, Y.:
"Emergent electromagnetic induction in a helical-spin magnet"
Nature, 586, 232 (2020). - 7.
Kurumaji, T., Nakajima, T., Hirschberger, M., Kikkawa, A., Yamasaki, Y., Sagayama, H., Nakao, H., Taguchi, Y., Arima, T., and Tokura, Y.:
"Skyrmion lattice with a giant topological Hall effect in a frustrated triangular-lattice magnet"
Science, 365, 914 (2019). - 8.
Fujishiro, Y., Kanazawa, N., Nakajima, T., Yu, X. Z., Ohishi, K., Kawamura, Y., Kakurai, K., Arima, T., Mitamura, H., Miyake, A., Akiba, K., Tokunaga, M., Matsuo, A., Kindo, K., Koretsune, T., Arita, R., and Tokura, Y.:
"Topological transitions among skyrmion- and hedgehog-lattice states in cubic chiral magnets"
Nat. Commun., 10, 1059 (2019). - 9.
Kurumaji, T., Nakajima, T., Ukleev, V., Feoktystov, A., Arima, T., Kakurai, K., and Tokura, Y.:
"Neel-Type Skyrmion Lattice in the Tetragonal Polar Magnet VOSe2O5"
Phys. Rev. Lett., 119, 237201 (2017). - 10.
Yokouchi, T., Kanazawa, N., Kikkawa, A., Morikawa, D., Shibata, K., Arima, T., Taguchi, Y., Kagawa, F., and Tokura, Y.:
"Electrical magnetochiral effect induced by chiral spin fluctuations"
Nat. Commun. 8, 866 (2017).
Recent Research Results
Aug. 30, 2019
Topological superconductivity studied in thin filmsFeb. 3, 2017
Magnetic bubbles pop upNov. 18, 2016
Switched-on skyrmionsJan. 29, 2016
A better foundation for 3D memoryOct. 9, 2015
Magnetic material feels the strainJul. 2, 2015
Evidence for stable room-temperature skyrmionsOct. 17, 2014
Putting quantum forces on the mapMar. 20, 2014
Magnetic twins are more efficientNov. 15, 2013
Harnessing the power of skyrmions
Related Links
Lab Members
Principal investigator
- Yoshinori Tokura
- Group Director
Core members
- Masamichi Nakajima
- Senior Scientist
- Chieko Terakura
- Senior Technical Scientist
- Yoshio Kaneko
- Research Consultant
- Izumi Hirabayashi
- Research Consultant
- Masakazu Ichikawa
- Research Consultant
- Yasushi Ogimoto
- Senior Visiting Scientist
Contact Information
Frontier Research Laboratory,
2-1 Hirosawa, Wako, Saitama
351-0198, Japan
Email: tokura@riken.jp