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

8 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

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