RIKEN Center for Emergent Matter Science Strong Correlation Quantum Transport Research Team

Team Director: Yoshinori Tokura (D.Eng.)

Japanese Page

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. 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. Sato, Y., Nagahama, S., Belopolski, I., Yoshimi, R., Kawamura, M., Tsukazaki, A., Kanazawa, N., Takahashi, K. S., Kawasaki, M., and Tokura, Y.:
"Molecular beam epitaxy of superconducting FeSexTe1−x thin films interfaced with magnetic topological insulators"
Phys. Rev. Mater. 8, L041801 (2024).
3. Kawamura, M., Mogi, M., Yoshimi, R., Morimoto, T., Takahashi, K. S., Tsukazaki, A., Nagaosa, N., Kawasaki, M., and Tokura, Y.:
"Laughlin charge pumping in a quantum anomalous Hall insulator"
Nat. Phys. 19, 333 (2023)
4. Mogi, M., Okamura, Y., Kawamura, M., Yoshimi, R., Yasuda, K., Tsukazaki, A., Takahashi, K. S., Morimoto, T., Nagaosa, N., Kawasaki, M., Takahashi, Y., and Tokura, Y.:
"Experimental signature of the parity anomaly in a semi-magnetic topological insulator"
Nat. Phys.,18, 390 (2022)
5. Yasuda, K., Morimoto, T., Yoshimi, R., Mogi, M., Tsukazaki, A., Kawamura, M., Takahashi, K. S., Kawasaki, M., Nagaosa, N., and Tokura, Y.:
"Large non-reciprocal charge transport mediated by quantum anomalous Hall edge states",
Nat. Nanotechnol., 15, 831 (2020)
6. Yasuda, K., Yasuda, H., Liang, T., Yoshimi, R., Tsukazaki, A., Takahashi, K. S., Nagaosa, N., Kawasaki, M., and Tokura, Y.:
"Nonreciprocal charge transport at topological insulator/superconductor interface"
Nat. Commun., 10, 2734 (2019).
7. Yoshimi, R., Yasuda, K., Tsukazaki, A., Takahashi, K. S., Kawasaki, M., and Tokura, Y.:
"Current-driven magnetization switching in ferromagnetic bulk Rashba semiconductor (Ge, Mn) Te",
Sci. Adv., 4, eaat9989 (2018).
8. 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).
9. Yasuda, K., Mogi, M., Yoshimi, R., Tsukazaki, A., Takahashi, K. S., Kawasaki, M., Kagawa, F., and Tokura, Y.:
"Quantized chiral edge conduction on domain walls of a magnetic topological insulator"
Science, 358, 1311 (2017).
10. 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).