Observation of the Orbital Rashba-Edelstein Magnetoresistance

被引：124

作者：

Ding, Shilei ^{[1
]}

Liang, Zhongyu ^{[1
]}

Go, Dongwook ^{[2
,3
,4
,5
]}

Yun, Chao ^{[1
]}

Xue, Mingzhu ^{[1
]}

Liu, Zhou ^{[1
]}

Becker, Sven ^{[5
]}

Yang, Wenyun ^{[1
]}

Du, Honglin ^{[1
]}

Wang, Changsheng ^{[1
]}

Yang, Yingchang ^{[1
]}

Jakob, Gerhard ^{[5
,6
]}

Klaui, Mathias ^{[5
,6
,7
]}

Mokrousov, Yuriy ^{[2
,3
,4
,5
]}

Yang, Jinbo ^{[1
,8
,9
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany

[3] Forschungszentrum Julich, Inst Adv Simulat, D-52425 Julich, Germany

[4] JARA, D-52425 Julich, Germany

[5] Johannes Gutenberg Univ Mainz, Inst Phys, Staudingerweg 7, D-55128 Mainz, Germany

[6] Grad Sch Excellence Mat Sci Mainz, D-55128 Mainz, Germany

[7] Norwegian Univ Sci & Technol, Dept Phys, Ctr Quantum Spintron, NO-7491 Trondheim, Norway

[8] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[9] Beijing Key Lab Magnetoelect Mat & Devices, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 06期

基金：

欧盟地平线“2020”; 欧洲研究理事会; 中国国家自然科学基金;

关键词：

SPIN; TORQUE;

D O I：

10.1103/PhysRevLett.128.067201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：6

共 47 条

[1] Interface-Generated Spin Currents [J].

Amin, V. P. ;

Zemen, J. ;

Stiles, M. D. .

PHYSICAL REVIEW LETTERS, 2018, 121 (13)

[2] Spin-torque generator engineered by natural oxidation of Cu [J].

An, Hongyu ;

Kageyama, Yuito ;

Kanno, Yusuke ;

Enishi, Nagisa ;

Ando, Kazuya .

NATURE COMMUNICATIONS, 2016, 7

[3] Theory of spin Hall magnetoresistance [J].

Chen, Yan-Ting ;

Takahashi, Saburo ;

Nakayama, Hiroyasu ;

Althammer, Matthias ;

Goennenwein, Sebastian T. B. ;

Saitoh, Eiji ;

Bauer, Gerrit E. W. .

PHYSICAL REVIEW B, 2013, 87 (14)

[4] Exchange bias of CoO1-δ/(NiFe,Fe) system with blocking temperature beyond Neel temperature of bulk CoO [J].

Ding, S. L. ;

Wu, R. ;

Fu, J. B. ;

Wen, X. ;

Du, H. L. ;

Liu, S. Q. ;

Han, J. Z. ;

Yang, Y. C. ;

Wang, C. S. ;

Zhou, D. ;

Yang, J. B. .

APPLIED PHYSICS LETTERS, 2015, 107 (17)

[5] Harnessing Orbital-to-Spin Conversion of Interfacial Orbital Currents for Efficient Spin-Orbit Torques [J].

Ding, Shilei ;

Ross, Andrew ;

Go, Dongwook ;

Baldrati, Lorenzo ;

Ren, Zengyao ;

Freimuth, Frank ;

Becker, Sven ;

Kammerbauer, Fabian ;

Yang, Jinbo ;

Jakob, Gerhard ;

Mokrousov, Yuriy ;

Klaeui, Mathias .

PHYSICAL REVIEW LETTERS, 2020, 125 (17)

[6] SPIN POLARIZATION OF CONDUCTION ELECTRONS INDUCED BY ELECTRIC-CURRENT IN 2-DIMENSIONAL ASYMMETRIC ELECTRON-SYSTEMS [J].

EDELSTEIN, VM .

SOLID STATE COMMUNICATIONS, 1990, 73 (03) :233-235

[7] Quantifying interface and bulk contributions to spin-orbit torque in magnetic bilayers [J].

Fan, Xin ;

Celik, Halise ;

Wu, Jun ;

Ni, Chaoying ;

Lee, Kyung-Jin ;

Lorenz, Virginia O. ;

Xiao, John Q. .

NATURE COMMUNICATIONS, 2014, 5

[8]

Go D., ARXIV210607928

[9] Orbitronics: Orbital currents in solids [J].

Go, Dongwook ;

Jo, Daegeun ;

Lee, Hyun-Woo ;

Klaeui, Mathias ;

Mokrousov, Yuriy .

EPL, 2021, 135 (03)

[10] Orbital Rashba effect in a surface-oxidized Cu film [J].

Go, Dongwook ;

Jo, Daegeun ;

Gao, Tenghua ;

Ando, Kazuya ;

Bluegel, Stefan ;

Lee, Hyun-Woo ;

Mokrousov, Yuriy .

PHYSICAL REVIEW B, 2021, 103 (12)

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