Current induced chiral domain wall motion in CuIr/CoFeB/MgO thin films with strong higher order spin-orbit torques

被引：5

作者：

Martin, Franziska ^{[1
]}

Lee, Kyujoon ^{[1
]}

Kronenberg, Alexander ^{[1
]}

Jaiswal, Samridh ^{[1
,2
]}

Reeve, Robert M. ^{[1
,3
]}

Filianina, Mariia ^{[1
,3
]}

Ji, Sanghyun ^{[1
,3
,4
]}

Jung, Myung-Hwa ^{[4
]}

Jakob, Gerhard ^{[1
,3
]}

Klaeui, Mathias ^{[1
,3
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Inst Phys, D-55099 Mainz, Germany

[2] Singulus Technol AG, D-63796 Kahl, Germany

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

[4] Sogang Univ, Dept Phys, Seoul 04107, South Korea

来源：

APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 13期

基金：

欧盟地平线“2020”;

关键词：

SYMMETRY;

D O I：

10.1063/1.5139704

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the Dzyaloshinskii-Moriya interaction (DMI) and spin-orbit torque effects in CuIr/CoFeB/MgO heterostructures. To this end, harmonic Hall measurements and current induced domain wall motion experiments are performed. The motion of domain walls at zero applied field due to current demonstrates the presence of DMI in this system. We determine the strength of the DMI to be D=+5 +/- 3 mu J/m2 and deduce right-handed chirality in domain walls showing a partial Neel type spin structure. To ascertain the torques, we perform a second harmonic measurement to quantify the damping- and field-like current induced effective fields as a function of the magnetization direction. From the angular dependent analysis, we identify non-negligible higher order terms for polar magnetization angles theta>0, which need to be included when considering the effective manipulation of spins by current. Published under license by AIP Publishing.

引用

页数：5

共 35 条

[1] Agrawal R, 2017, ACTA OPHTHALMOL, V95, pe597, DOI DOI 10.1103/PhysRevB.95.224409
[2] [Anonymous], 2011, AM J GASTROENTEROL, V106, pS76, DOI DOI 10.1103/PhysRevLett.106.126601
[3] [Anonymous], 2012, P NATL ACAD SCI USA, V109, pE1377, DOI DOI 10.1103/PhysRevLett.109.156602
[4] Hund's Rule-Driven Dzyaloshinskii-Moriya Interaction at 3d-5d Interfaces
Belabbes, A.
Bihlmayer, G.
Bechstedt, F.
Bluegel, S.
Manchon, A.
[J]. PHYSICAL REVIEW LETTERS, 2016, 117 (24)
[5] Current-induced domain wall motion in nanoscale ferromagnetic elements
Boulle, O.
Malinowski, G.
Klaeui, M.
[J]. MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2011, 72 (09) : III - 187
[6] Coey J M. D., 2010, Magnetism and Magnetic Materials, P464, DOI DOI 10.1017/CBO9780511845000
[7] Complex Terahertz and Direct Current Inverse Spin Hall Effect in YIG/Cu1-xIrx Bilayers Across a Wide Concentration Range
Cramer, Joel
Seifer, Tom
Kronenberg, Alexander
Fuhrmann, Felix
Jakob, Gerhard
Jourdan, Martin
Kampfrath, Tobias
Klaeui, Mathias
[J]. NANO LETTERS, 2018, 18 (02) : 1064 - 1069
[8] Dzyaloshinsky-Moriya interactions induced by symmetry breaking at a surface
Crepieux, A
Lacroix, C
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 182 (03) : 341 - 349
[9] A THERMODYNAMIC THEORY OF WEAK FERROMAGNETISM OF ANTIFERROMAGNETICS
DZYALOSHINSKY, I
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1958, 4 (04) : 241 - 255
[10] SPIN POLARIZATION OF CONDUCTION ELECTRONS INDUCED BY ELECTRIC-CURRENT IN 2-DIMENSIONAL ASYMMETRIC ELECTRON-SYSTEMS
EDELSTEIN, VM
[J]. SOLID STATE COMMUNICATIONS, 1990, 73 (03) : 233 - 235

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