期刊
SCIENCE BULLETIN
卷 65, 期 3, 页码 201-207出版社
ELSEVIER
DOI: 10.1016/j.scib.2019.11.025
关键词
Magnetic vortex cluster; Inhomogeneous strain; One-dimensional manganites; Epitaxial thin films; Cryo-Temperature MFM
资金
- National Key Research and Development Program of China [2016YFA0302300]
- Beijing Natural Science Foundation [Z190008]
- National Natural Science Foundation of China [11974023, 51672007, 11974052, 11474024, 11604011, 11672264, 11621062]
- Beijing Institute of Technology Research Fund Program for Young Scholars
- German Research Foundation DFG [SFB TRR173, KL1811/18]
- Graduate School of Excellence Materials Science in Mainz [GSC266]
- National Key R&D Program of China [2016YFA0300804]
- Key R&D Program of Guangdong Province [2018B030327001, 2018B010109009]
Mixed-valance manganites with strong electron correlation exhibit strong potential for spintronics, where emergent magnetic behaviors, such as propagation of high-frequency spin waves and giant topological Hall Effects can be driven by their mesoscale spin textures. Here, we create magnetic vortex clusters with flux closure spin configurations in single-crystal La0.67Sr0.33MnO3 wire. A distinctive transformation from out-of-plane domains to a vortex state is directly visualized using magnetic force microscopy at 4 K in wires when the width is below 1.0 mu m. The phase-field modeling indicates that the inhomogeneous strain, accompanying with shape anisotropy, plays a key role for stabilizing the flux-closure spin structure. This work offers a new perspective for understanding and manipulating the non-trivial spin textures in strongly correlated systems. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
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