TY  - JOUR
AU  - Ding, Shilei
AU  - Liang, Zhongyu
AU  - Go, Dongwook
AU  - Yun, Chao
AU  - Xue, Mingzhu
AU  - Liu, Zhou
AU  - Becker, Sven
AU  - Yang, Wenyun
AU  - Du, Honglin
AU  - Wang, Changsheng
AU  - Yang, Yingchang
AU  - Jakob, Gerhard
AU  - Kläui, Mathias
AU  - Mokrousov, Yuriy
AU  - Yang, Jinbo
TI  - Observation of the Orbital Rashba-Edelstein Magnetoresistance
JO  - Physical review letters
VL  - 128
IS  - 6
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2022-01842
SP  - 067201
PY  - 2022
AB  - We report the observation of magnetoresistance (MR) that could originate from the orbital angular momentum (OAM) transport in a permalloy (Py)/oxidized Cu (Cu∗) heterostructure: the orbital Rashba-Edelstein magnetoresistance. The angular dependence of the MR depends on the relative angle between the induced OAM and the magnetization in a similar fashion as the spin Hall magnetoresistance. Despite the absence of elements with large spin-orbit coupling, we find a sizable MR ratio, which is in contrast to the conventional spin Hall magnetoresistance which requires heavy elements. Through Py thickness-dependence studies, we conclude another mechanism beyond the conventional spin-based scenario is responsible for the MR observed in Py/Cu∗ structures—originated in a sizable transport of OAM. Our findings not only suggest the current-induced torques without using any heavy elements via the OAM channel but also provide an important clue towards the microscopic understanding of the role that OAM transport can play for magnetization dynamics.
LB  - PUB:(DE-HGF)16
C6  - pmid:35213174
UR  - <Go to ISI:>//WOS:000759205400005
DO  - DOI:10.1103/PhysRevLett.128.067201
UR  - https://juser.fz-juelich.de/record/907111
ER  -