Efficient Spin Torques in Antiferromagnetic CoO/Pt Quantified by Comparing Field- and Current-Induced Switching

被引：41

作者：

Baldrati, L. ^{[1
]}

Schmitt, C. ^{[1
]}

Gomonay, O. ^{[1
]}

Lebrun, R. ^{[1
,2
]}

Ramos, R. ^{[3
]}

Saitoh, E. ^{[3
,4
,5
,6
,7
]}

Sinova, J. ^{[1
,8
,9
]}

Klaeui, M. ^{[1
,9
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany

[2] Univ Paris Saclay, Univ Paris Sud, CNRS, Thales,Unite Mixte Phys, F-91767 Palaiseau, France

[3] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[5] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[6] Tohoku Univ, Ctr Spintron Res Network, Sendai, Miyagi 9808577, Japan

[7] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[8] Acad Sci Czech Republ, Inst Phys, Prague 11720, Czech Republic

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

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 07期

基金：

欧洲研究理事会;

关键词：

MNO;

D O I：

10.1103/PhysRevLett.125.077201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We achieve current-induced switching in collinear insulating antiferromagnetic CoO/Pt, with fourfold in-plane magnetic anisotropy. This is measured electrically by spin Hall magnetoresistance and confirmed by the magnetic field-induced spin-flop transition of the CoO layer. By applying current pulses and magnetic fields, we quantify the efficiency of the acting current-induced torques and estimate a currentfield equivalence ratio of 4 x 10(-11) T A(-1) m(2). The Neel vector final state (n perpendicular to j) is in line with a thermomagnetoelastic switching mechanism for a negative magnetoelastic constant of the CoO.

引用

页数：6

共 31 条

[21] MAGNETIC SUSCEPTIBILITY AND MAGNETOSTRICTION OF COO, MNO, AND NIO
MCGUIRE, TR
CRAPO, WA
[J]. JOURNAL OF APPLIED PHYSICS, 1962, 33 (03) : 1291 - &
[22] Spin torque control of antiferromagnetic moments in NiO
Moriyama, Takahiro
Oda, Kent
Ohkochi, Takuo
Kimata, Motoi
Ono, Teruo
[J]. SCIENTIFIC REPORTS, 2018, 8
[23] Spin Hall Magnetoresistance Induced by a Nonequilibrium Proximity Effect
Nakayama, H.
Althammer, M.
Chen, Y. -T.
Uchida, K.
Kajiwara, Y.
Kikuchi, D.
Ohtani, T.
Gepraegs, S.
Opel, M.
Takahashi, S.
Gross, R.
Bauer, G. E. W.
Goennenwein, S. T. B.
Saitoh, E.
[J]. PHYSICAL REVIEW LETTERS, 2013, 110 (20)
[24] Lattice distortion in antiferromagnetic CoO under high magnetic fields
Narumi, Yasuo
Katsumata, Koichi
Staub, Urs
Kindo, Koichi
Kawauchi, Makoto
Broennimann, Christian
Toyokawa, Hidenori
Tanaka, Yoshikazu
Kikkawa, Akiko
Yamamoto, Tomohide
Hagiwara, Masayuki
Ishikawa, Tetsuya
Kitamura, Hideo
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2006, 75 (07)
[25] Temperature dependence of spin Hall magnetoresistance across the Neel temperature of CoO
Oda, Kent
Moriyama, Takahiro
Kimata, Motoi
Kasukawa, Shuhei
Ono, Teruo
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS, 2020, 59 (01)
[26] MAGNETIC STRUCTURES OF MNO, FEO, COO, AND NIO
ROTH, WL
[J]. PHYSICAL REVIEW, 1958, 110 (06): : 1333 - 1341
[27] X-RAY DIFFRACTION STUDY ON COO
SAITO, S
NAKAHIGASHI, K
SHIMOMURA, Y
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1966, 21 (05) : 850 - +
[28] MAGNETIC ANISOTROPY MEASUREMENTS OF COO SINGLE CRYSTAL
UCHIDA, E
NAGAMIYA, T
KONDOH, H
NAKAZUMI, Y
TAKEDA, T
FUKUOKA, N
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1964, 19 (11) : 2088 - &
[29] Electrical switching of an antiferromagnet
Wadley, P.
Howells, B.
Zelezny, J.
Andrews, C.
Hills, V.
Campion, R. P.
Novak, V.
Olejnik, K.
Maccherozzi, F.
Dhesi, S. S.
Martin, S. Y.
Wagner, T.
Wunderlich, J.
Freimuth, F.
Mokrousov, Y.
Kunes, J.
Chauhan, J. S.
Grzybowski, M. J.
Rushforth, A. W.
Edmonds, K. W.
Gallagher, B. L.
Jungwirth, T.
[J]. SCIENCE, 2016, 351 (6273) : 587 - 590
[30] Quantitative Study on Current-Induced Effect in an Antiferromagnet Insulator/Pt Bilayer Film
Zhang, Pengxiang
Finley, Joseph
Safi, Taqiyyah
Liu, Luqiao
[J]. PHYSICAL REVIEW LETTERS, 2019, 123 (24)

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