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Yingpeng Qi

As seen in: Nature, Wiley Online Library
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Articles

Noncollinear ferrielectricity in a van der Waals crystal

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By Jierui Fu, Gang Wang, Yingpeng Qi, Yuqiang Fang, Gang Tang, Dong Wang, Zhenjie Guan, Xuzhou Sun, Shuming Zhang, Zunyi Deng, Yue Liu, Jiapeng Wang, Songge Li, Tingting Li, Jinjing Zhou, Yuchen Shang, Yankun Yin, Zhaoju Yang, Jinzhong Wang, Dao Xiang, Liang Zhen, Jiawang Hong, Fuqiang Huang, Junhao Lin, Chengyan Xu, Yanting Peng
| Nature Verified
Abstract Inspired by noncollinear magnetic dipole order, noncollinear electric dipole order is anticipated to open up rich ferroelectric physics and new opportunities for device applications. However, establishing such order in single crystals remains challenging, as electric polarization is typically locked to crystallographic axes. Here we report noncollinear ferrielectricity in the van der Waals crystal WO2Br2, arising from competition between ferroelectric and antiferroelectric phonon modes.
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Femtosecond Electron Diffraction Reveals Local Disorder and Local Anharmonicity in Thermoelectric SnSe

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By Jingjun Li, Qing Yang, Yingpeng Qi, Luye Yue
| Wiley Online Library Verified
Supporting Information Filename Description adma202313742-sup-0001-SuppMat.pdf2.1 MB Supporting Information adma202313742-sup-0002-MovieS1.gif26 MB Supplemental Movie 1
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