journal article·2020-01Open access

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

Advanced Materials· Volume 32· Issue 1

Abstract

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.
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Research context

OpenAlex topics: Magnetic properties of thin films · Advanced Condensed Matter Physics · Characterization and Applications of Magnetic Nanoparticles

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

Institute for Advanced Materials Guangdong Provincial Key Laboratory of Optical Information Materials and Technology South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China

Physical Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955‐6900 Saudi Arabia

School of Science and Engineering The Chinese University of Hong Kong Shenzhen Guangdong 518172 China

School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China

Department of Applied Physics The University of Tokyo 7‐3‐1 Hongo Tokyo 113‐8656 Japan

Department of Electrical and Computer Engineering Shinshu University 4‐17‐1 Wakasato Nagano 380‐8553 Japan

Funding

National Basic Research Program of China · National Natural Science Foundation of China · King Abdullah University of Science and Technology · Chinese Academy of Sciences · Core Research for Evolutional Science and Technology · Japan Science and Technology Corporation

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