Polar Solomon rings in ferroelectric nanocrystals

Jing Wang, Deshan Liang, Jing Ma, Yuanyuan Fan, Ji Ma, Hasnain Mehdi Jafri, Huayu Yang, Qinghua Zhang, Yue Wang, Changqing Guo, Shouzhe Dong, Di Liu, Xueyun Wang, Jiawang Hong, Nan Zhang, Lin Gu, Di Yi, Jinxing Zhang, Yuanhua Lin, Long-Qing Chen, Houbing Huang () and Ce-Wen Nan ()
Additional contact information
Jing Wang: Beijing Institute of Technology
Deshan Liang: Beijing Institute of Technology
Jing Ma: Tsinghua University
Yuanyuan Fan: Beijing Institute of Technology
Ji Ma: Tsinghua University
Hasnain Mehdi Jafri: Beijing Institute of Technology
Huayu Yang: Beijing Institute of Technology
Qinghua Zhang: Chinese Academy of Science
Yue Wang: Tsinghua University
Changqing Guo: Beijing Institute of Technology
Shouzhe Dong: Beijing Institute of Technology
Di Liu: Beijing Institute of Technology
Xueyun Wang: Beijing Institute of Technology
Jiawang Hong: Beijing Institute of Technology
Nan Zhang: Beijing Institute of Technology
Lin Gu: Tsinghua University
Di Yi: Tsinghua University
Jinxing Zhang: Beijing Normal University
Yuanhua Lin: Tsinghua University
Long-Qing Chen: Pennsylvania State University
Houbing Huang: Beijing Institute of Technology
Ce-Wen Nan: Tsinghua University

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Solomon rings, upholding the symbol of wisdom with profound historical roots, were widely used as decorations in ancient architecture and clothing. However, it was only recently discovered that such topological structures can be formed by self-organization in biological/chemical molecules, liquid crystals, etc. Here, we report the observation of polar Solomon rings in a ferroelectric nanocrystal, which consist of two intertwined vortices and are mathematically equivalent to a $${4}_{1}^{2}$$ 4 1 2 link in topology. By combining piezoresponse force microscopy observations and phase-field simulations, we demonstrate the reversible switching between polar Solomon rings and vertex textures by an electric field. The two types of topological polar textures exhibit distinct absorption of terahertz infrared waves, which can be exploited in infrared displays with a nanoscale resolution. Our study establishes, both experimentally and computationally, the existence and electrical manipulation of polar Solomon rings, a new form of topological polar structures that may provide a simple way for fast, robust, and high-resolution optoelectronic devices.

Date: 2023
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DOI: 10.1038/s41467-023-39668-y

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