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. Costa; Enke Liu; Guangheng Wu; Motohiko Ezawa; Xiaoxi Liu; Yan Zhou; Xixiang Zhang; Wenhong Wang

doi:10.1002/adma.201904815

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. Costa, Enke Liu, Guangheng Wu, Motohiko Ezawa, Xiaoxi Liu, Yan Zhou, Xixiang Zhang, Wenhong Wang

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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 Fe₃Sn₂ 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 language	English (US)
Article number	1904815
Journal	Advanced Materials
Volume	32
Issue number	1
DOIs	https://doi.org/10.1002/adma.201904815
State	Published - Jan 1 2020

Keywords

current-induced helicity reversal
frustrated magnets
skyrmions
spin-polarized current

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201904815

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Hou, Z., Zhang, Q., Zhang, X., Xu, G., Xia, J., Ding, B., Li, H., Zhang, S., Batra, N. M., Costa, P. M. F. J., Liu, E., Wu, G., Ezawa, M., Liu, X., Zhou, Y., Zhang, X., & Wang, W. (2020). Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet. Advanced Materials, 32(1), Article 1904815. https://doi.org/10.1002/adma.201904815

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title = "Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet",

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 Fe3Sn2 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.",

keywords = "current-induced helicity reversal, frustrated magnets, skyrmions, spin-polarized current",

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

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year = "2020",

month = jan,

day = "1",

doi = "10.1002/adma.201904815",

language = "English (US)",

volume = "32",

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T1 - Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet

AU - Hou, Zhipeng

AU - Zhang, Qiang

AU - Zhang, Xichao

AU - Xu, Guizhou

AU - Xia, Jing

AU - Ding, Bei

AU - Li, Hang

AU - Zhang, Senfu

AU - Batra, Nitin M.

AU - Costa, Pedro M.F.J.

AU - Liu, Enke

AU - Wu, Guangheng

AU - Ezawa, Motohiko

AU - Liu, Xiaoxi

AU - Zhou, Yan

AU - Zhang, Xixiang

AU - Wang, Wenhong

PY - 2020/1/1

Y1 - 2020/1/1

N2 - 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 Fe3Sn2 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.

AB - 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 Fe3Sn2 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.

KW - current-induced helicity reversal

KW - frustrated magnets

KW - skyrmions

KW - spin-polarized current

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

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