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

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

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)1904815
JournalAdvanced materials
Volume32
Issue number1
DOIs
StatePublished - Nov 21 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): CRF-2015-2549-CRG4, CRF-2016-CRG5-2977
Acknowledgements: 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).

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