Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet.

Hou, Zhipeng; Zhang, Qiang; Zhang, Xichao; Xu, Guizhou; Xia, Jing; Ding, Bei; Li, Hang; Zhang, Senfu; Batra, Nitin M; Da Costa, Pedro M. F. J.; Liu, Enke; Wu, Guangheng; Ezawa, Motohiko; Liu, Xiaoxi; Zhou, Yan; Zhang, Xixiang; Wang, Wenhong

Type

Article

KAUST Department

Imaging and Characterization Core Lab
Nanofabrication Core Lab
Thin Films & Characterization
Physical Sciences and Engineering (PSE) Division
Materials Science and Engineering Program

KAUST Grant Number

CRF-2015-2549-CRG4
CRF-2016-CRG5-2977

Date

2019-11-21

Embargo End Date

2020-11-21

Permanent link to this record

http://hdl.handle.net/10754/660199

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Abstract

Helicity indicates the in-plane magnetic-moment swirling direction of a skyrmionic configuration. The ability to reverse the helicity of a skyrmionic bubble via purely electrical means has been predicted in frustrated magnetic systems; however, it has been challenging to observe this experimentally. The current-driven helicity reversal of the skyrmionic bubble in a nanostructured frustrated Fe3 Sn2 magnet is experimentally demonstrated. The critical current density required to trigger the helicity reversal is 109 -1010 A m-2 , with a corresponding pulse-width varying from 1 µs to 100 ns. Computational simulations reveal that both the pinning effect and dipole-dipole interaction play a crucial role in the helicity reversal process.

Citation

Hou, Z., Zhang, Q., Zhang, X., Xu, G., Xia, J., Ding, B., … Wang, W. (2019). Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet. Advanced Materials, 1904815. doi:10.1002/adma.201904815

Sponsors

Z.P.H., Q.Z., and X.Z. contributed equally to this work. This work was supported by the National Key R&D Program of China (Grant No. 2017YFA0303202), the National Natural Science Foundation of China (Grant Nos. 11574137, 11604148, 11874410, 11974298, and 61961136006), the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. CRF-2015-2549-CRG4 and No. 2016-CRG5-2977, the Presidential Postdoctoral Fellowship and President's Fund of CUHKSZ, Longgang Key Laboratory of Applied Spintronics, the Shenzhen Fundamental Research Fund (Grant No. JCYJ20170410171958839), Shenzhen Peacock Group Plan (Grant No. KQTD20180413181702403), the Key Research Program of the Chinese Academy of Sciences (Grant No. KJZD-SW-M01), the Grants-in-Aid for Scientific Research from JSPS KAKENHI (Grant Nos. JP18H03676, JP17K05490, JP15H05854 and JP17K19074), and CREST, JST (Grant Nos. JPMJCR1874 and JPMJCR16F1).