Mechanical manipulation for ordered topological defects

Ziyan Gao, Yixuan Zhang, Xiaomei Li, Xiangping Zhang, Xue Chen, Guoshuai Du, Fei Hou, Baijun Gu, Yingzhuo Lun, Yao Zhao, Yingtao Zhao, Zhaoliang Qu, Ke Jin, Xiaolei Wang, Yabin Chen, Zhanwei Liu, Houbing Huang, Peng Gao, Maxim Mostovoy, Jiawang Hong*Sang Wook Cheong, Xueyun Wang*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

3 引用 (Scopus)

摘要

Randomly distributed topological defects created during the spontaneous symmetry breaking are the fingerprints to trace the evolution of symmetry, range of interaction, and order parameters in condensed matter systems. However, the effective mean to manipulate topological defects into ordered form is elusive due to the topological protection. Here, we establish a strategy to effectively align the topological domain networks in hexagonal manganites through a mechanical approach. It is found that the nanoindentation strain gives rise to a threefold Magnus-type force distribution, leading to a sixfold symmetric domain pattern by driving the vortex and antivortex in opposite directions. On the basis of this rationale, sizeable mono-chirality topological stripe is readily achieved by expanding the nanoindentation to scratch, directly transferring the randomly distributed topological defects into an ordered form. This discovery provides a mechanical strategy to manipulate topological protected domains not only on ferroelectrics but also on ferromagnets/antiferromagnets and ferroelastics.

源语言英语
文章编号eadi5894
期刊Science advances
10
1
DOI
出版状态已出版 - 1月 2024

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Gao, Z., Zhang, Y., Li, X., Zhang, X., Chen, X., Du, G., Hou, F., Gu, B., Lun, Y., Zhao, Y., Zhao, Y., Qu, Z., Jin, K., Wang, X., Chen, Y., Liu, Z., Huang, H., Gao, P., Mostovoy, M., ... Wang, X. (2024). Mechanical manipulation for ordered topological defects. Science advances, 10(1), 文章 eadi5894. https://doi.org/10.1126/sciadv.adi5894