Current-induced effective magnetic field acting on a domain wall in perpendicularly magnetized Pd/Co2MnGa

被引：0

作者：

Koyama, Takaya ^{[1
]}

Nishioka, Yuki ^{[1
]}

Uemura, Tetsuya ^{[1
]}

Yamanouchi, Michihiko ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Informat Sci & Technol, Div Elect Informat, Sapporo 0600814, Japan

来源：

AIP ADVANCES | 2025年 / 15卷 / 03期

关键词：

DYNAMICS;

D O I：

10.1063/9.0000885

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigated the current-induced effective magnetic field H-eff acting on a domain wall (DW) under an in-plane magnetic field H-// along the current direction in a perpendicularly magnetized heterostructure composed of a Pd and Weyl ferromagnet Co2MnGa (CMG) layer. H-eff is equivalent to a perpendicular magnetic field to move the DW. The magnitude of H-eff per current density had a local maximum with respect to H-// and decreased at large |H-//|. This relationship cannot be explained only by H-eff originating from the conventional spin-orbit torque and/or orbit torque (SOT/OT). Assuming that the residual component of H-eff excluding the contribution of SOT/OT originates from the conventional field-like spin-transfer torque, the lower bound of the nonadiabaticity parameter characterizing the torque, which is usually much less than 1, is estimated to be 1.9. These results suggest that unconventional and energy-efficient mechanisms are superposed on the SOT/OT in Pd/CMG.

引用

页数：5

共 22 条

[1] Intrinsic Torques Emerging from Anomalous Velocity in Magnetic Textures [J].

Araki, Yasufumi ;

Ieda, Jun'ichi .

PHYSICAL REVIEW LETTERS, 2021, 127 (27)

[2]

Emori S, 2013, NAT MATER, V12, P611, DOI [10.1038/NMAT3675, 10.1038/nmat3675]

[3] Current-induced domain wall motion in perpendicularly magnetized CoFeB nanowire [J].

Fukami, S. ;

Suzuki, T. ;

Nakatani, Y. ;

Ishiwata, N. ;

Yamanouchi, M. ;

Ikeda, S. ;

Kasai, N. ;

Ohno, H. .

APPLIED PHYSICS LETTERS, 2011, 98 (08)

[4]

Fukami S., 2009, Digest of Technical Papers, p230 231

[5] Current-induced switching of a ferromagnetic Weyl semimetal Co2MnGa [J].

Han, Jiahao ;

McGoldrick, Brooke C. ;

Chou, Chung-Tao ;

Safi, Taqiyyah S. ;

Hou, Justin T. ;

Liu, Luqiao .

APPLIED PHYSICS LETTERS, 2021, 119 (21)

[6] Anomalous Nernst effect in Co2MnGa thin films with perpendicular magnetic anisotropy [J].

Hu, Junfeng ;

Zhang, Yao ;

Caebro, Marco A. Z. ;

Wei, Bohang ;

Tu, Sa ;

Liu, Song ;

Yu, Dapeng ;

Ansermet, Jean-Philippe ;

Granville, Simon ;

Yu, Haiming .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2020, 500

[7] Observation of the intrinsic pinning of a magnetic domain wall in a ferromagnetic nanowire [J].

Koyama, T. ;

Chiba, D. ;

Ueda, K. ;

Kondou, K. ;

Tanigawa, H. ;

Fukami, S. ;

Suzuki, T. ;

Ohshima, N. ;

Ishiwata, N. ;

Nakatani, Y. ;

Kobayashi, K. ;

Ono, T. .

NATURE MATERIALS, 2011, 10 (03) :194-197

[8] Theory for spin torque in Weyl semimetal with magnetic texture [J].

Kurebayashi, Daichi ;

Nomura, Kentaro .

SCIENTIFIC REPORTS, 2019, 9 (1)

[9] Perpendicular magnetic anisotropy in Co2MnGa and its anomalous Hall effect [J].

Ludbrook, B. M. ;

Ruck, B. J. ;

Granville, S. .

APPLIED PHYSICS LETTERS, 2017, 110 (06)

[10] Current-driven magnetic domain-wall logic [J].

Luo, Zhaochu ;

Hrabec, Ales ;

Dao, Trong Phuong ;

Sala, Giacomo ;

Finizio, Simone ;

Feng, Junxiao ;

Mayr, Sina ;

Raabe, Joerg ;

Gambardella, Pietro ;

Heyderman, Laura J. .

NATURE, 2020, 579 (7798) :214-+

← 1 2 3 →