RIKEN Center for Emergent Matter Science Strong Correlation Quantum Transport Research Team
Team Leader: Yoshinori Tokura (D.Eng.)
Research Summary

We aim to study various quantum transport phenomena which emerge in thin films, hetero-interfaces, and bulk samples. Specifically, we try to clarify the effects of spin-orbit interaction on the transport phenomena in the systems with broken inversion-symmetry, and electron transport in non-trivial spin textures, through the transport measurements under low temperature and high magnetic-field conditions. Unconventional superconductors are also investigated by means of resistivity measurement under high pressure as well as THz spectroscopy.
Main Research Fields
- Mathematical & Physical Sciences
Related Research Fields
- Interdisciplinary Science & Engineering
- Engineering
Keywords
- strongly correlated electrons system
- colossal magnetoresistance
- high-temperature superconductors
- multiferroics
- topological insulators
Selected Publications
- 1.Mogi, M., Kawamura, M., Yoshimi, R., Tsukazaki, A., Kozuka, Y., Shirakawa, N., Takahashi, K. S., Kawasaki, M., and Tokura, Y.:
"A magnetic heterostructure of topological insulators as a candidate for an axion insulator"
Nat. Mater. 16, 516-521 (2017). - 2.Yasuda, K., Tsukazaki, A., Yoshimi, R., Takahashi, K.S., Kawasaki, M., and Tokura, Y.:
"Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator"
Phys. Rev. Lett. 117, 127202 (2016). - 3.Okada, K. N., Takahashi, Y., Mogi, M., Yoshimi, R., Tsukazaki, A., Takahashi, K. S., Ogawa, N., Kawasaki, M., and Tokura, Y.:
"Terahertz spectroscopy on Faraday and Kerr rotations in a quantum anomalous Hall state"
Nat. Commun. 7, 12245 (2016). - 4.Yasuda, K., Wakatsuki, R., Morimoto, T., Yoshimi, R., Tsukazaki, A., Takahashi, K. S., Ezawa, M., Kawasaki, M., Nagaosa, N., and Tokura, Y.:
"Geometric Hall effects in topological insulator heterostructures"
Nat. Phys. 12, 555-559 (2016). - 5.Yamamoto, A., Takeshita, N., Terakura, C., and Tokura, Y.:
"High pressure effects revisited for the cuprate superconductor family with highest critical temperature"
Nat. Commun. 6, 8990 (2015). - 6.Yoshimi, R., Yasuda, K., Tsukazaki, A., Takahashi, K. S., Nagaosa, N., Kawasaki, M., and Tokura, Y.:
"Quantum Hall states stabilized in semi-magnetic bilayers of topological insulators"
Nat. Commun. 6, 8530 (2015). - 7.Yoshimi, R., Tsukazaki, A., Kozuka, Y., Falson, J., Takahashi, K. S., Checkelsky, J. G., Nagaosa, N., Kawasaki, M., and Tokura, Y.:
"Quantum Hall effect on top and bottom surface states of topological insulator (Bi1-xSbx)2Te3 films"
Nat. Commun. 6, 6627 (2015). - 8.Checkelsky, J. G., Yoshimi, R., Tsukazaki, A., Takahashi, K. S., Kozuka, Y., Falson, J., Kawasaki, M., and Tokura, Y.:
"Trajectory of the anomalous Hall effect towards the quantized state in a ferromagnetic topological insulator"
Nat. Phys. 10, 731-736 (2014). - 9.Yoshimi, R., Tsukazaki, A., Kikutake, K., Checkelsky, J. G., Takahashi, K. S., Kawasaki, M., and Tokura, Y.:
"Dirac electron states formed at the heterointerface between a topological insulator and a conventional semiconductor"
Nat. Mater. 13, 253-257 (2014). - 10.Murakawa, H., Bahramy, M. S., Tokunaga, M., Kohama, Y., Bell, C., Kaneko, Y., Nagaosa, N., Hwang, H. Y., and Tokura, Y.:
"Detection of Berry's phase in a bulk Rashba semiconductor"
Science 342, 1490 (2013).
Recent Research Results
Apr. 18, 2023
Why exotic states of matter don’t need edgesDec. 13, 2019
A new way to induce the quantum anomalous Hall effectOct. 9, 2015
Characterizing electrons in the smallest devices
Related Links
Lab Members
Principal investigator
- Yoshinori Tokura
- Team Leader
Core members
- Minoru Kawamura
- Senior Research Scientist
- Ryutaro Yoshimi
- Research Scientist
- Ilya Belopolski
- Special Postdoctoral Researcher
- Yuki Sato
- Special Postdoctoral Researcher
- Max Birch
- Special Postdoctoral Researcher
Contact Information
Frontier Research Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Email: tokura [at] riken.jp