Strongly correlated electron systems exhibit cross-correlated physical properties arising from multiple degrees of freedom such as charge, spin, electric polarization, and lattice, demonstrating non-trivial and complex physical properties and responses to external stimuli. As a result, they are expected to find applications in new electromagnetics devices, such as low-energy-loss motors. To realize practical devices, it is essential to investigate the electronic and spin structure at the micro- to mesoscopic scale and elucidate the underlying mechanisms.
In this study, we aim to visualize such structures of strongly correlated electron materials using synchrotron radiation, neutrons, and muons, to elucidate their operational principles. The results will contribute to the development of design guidelines for high-performance materials.
SAGAYAMA Hajime, HONDA Takashi, ABE Hitoshi, KODA Akihiro, KADONO Ryosuke
The University of Tokyo, Tohoku University, Tokyo Institute of Technology, NIMS, JFCC
放射光X線回折，中性子散乱，ミュオンスピン回転
図1 強相関物質における交差相関物性の概念図
図2 マルチフェロイック物質の光の非相反効果。光通信経路におけるスイッチングアイソレーターとしての応用が期待されている。
図3 マルチフェロイク物質を利用したメモリーデバイスの概念図（S. Manipatruni et al., Nature 565, 35-42 (2019).）
