Authors:	Ding, Shilei Liang, Zhongyu Go, Dongwook Yun, Chao Xue, Mingzhu Liu, Zhou Becker, Sven Yang, Wenyun Du, Honglin Wang, Changsheng Yang, Yingchang Jakob, Gerhard Kläui, Mathias Mokrousov, Yuriy Yang, Jinbo
Title:	Observation of the orbital Rashba-Edelstein magnetoresistance
Online publication date:	31-Aug-2023
Year of first publication:	2022
Language:	english
Abstract:	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 RashbaEdelstein 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 thicknessdependence 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.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-7332
Version:	Published version
Publication type:	Zeitschriftenaufsatz
Document type specification:	Scientific article
License:	In Copyright
Information on rights of use:	http://rightsstatements.org/vocab/InC/1.0/
Journal:	Physical review letters 128 6
Pages or article number:	067201
Publisher:	American Physical Society
Publisher place:	Ridge, NY
Issue date:	2022
ISSN:	0031-9007
Publisher DOI:	10.1103/PhysRevLett.128.067201
Appears in collections:	JGU-Publikationen