TY  - JOUR
AU  - Hayashi, Hiroki
AU  - Jo, Daegeun
AU  - Go, Dongwook
AU  - Gao, Tenghua
AU  - Haku, Satoshi
AU  - Mokrousov, Yuriy
AU  - Lee, Hyun-Woo
AU  - Ando, Kazuya
TI  - Observation of long-range orbital transport and giant orbital torque
JO  - Communications Physics
VL  - 6
IS  - 1
SN  - 2399-3650
CY  - London
PB  - Springer Nature
M1  - FZJ-2023-05908
SP  - 32
PY  - 2023
AB  - Modern spintronics relies on the generation of spin currents through spin-orbit coupling. The spin-current generation has been believed to be triggered by current-induced orbital dynamics, which governs the angular momentum transfer from the lattice to the electrons in solids. The fundamental role of the orbital response in the angular momentum dynamics suggests the importance of the orbital counterpart of spin currents: orbital currents. However, evidence for its existence has been elusive. Here, we demonstrate the generation of giant orbital currents and uncover fundamental features of the orbital response. We experimentally and theoretically show that orbital currents propagate over longer distances than spin currents by more than an order of magnitude in a ferromagnet and nonmagnets. Furthermore, we find that the orbital current enables electric manipulation of magnetization with efficiencies significantly higher than the spin counterpart. These findings open the door to orbitronics that exploits orbital transport and spin-orbital coupled dynamics in solid-state devices.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000926732800001
DO  - DOI:10.1038/s42005-023-01139-7
UR  - https://juser.fz-juelich.de/record/1020241
ER  -