Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure
Interlayer stacking order has recently emerged as a unique degree of freedom to control crystal symmetry and physical properties in two-dimensional van der Waals (vdW) materials and heterostructures. By tuning the layer stacking pattern, symmetry-breaking and electric polarization can be created...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/178419 |
| _version_ | 1824455039066832896 |
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| author | Zhou, Zhou Zhang, Jun-Jie Turner, Gemma F. Moggach, Stephen A. Lekina, Yulia Morris, Samuel Wang, Shun Hu, Yiqi Li, Qiankun Xue, Jinshuo Feng, Zhijian Yan, Qingyu Weng, Yuyan Xu, Bin Fang, Yong Shen, Zexiang Fang, Liang Dong, Shuai You, Lu |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zhou, Zhou Zhang, Jun-Jie Turner, Gemma F. Moggach, Stephen A. Lekina, Yulia Morris, Samuel Wang, Shun Hu, Yiqi Li, Qiankun Xue, Jinshuo Feng, Zhijian Yan, Qingyu Weng, Yuyan Xu, Bin Fang, Yong Shen, Zexiang Fang, Liang Dong, Shuai You, Lu |
| author_sort | Zhou, Zhou |
| collection | NTU |
| description | Interlayer stacking order has recently emerged as a unique degree of freedom
to control crystal symmetry and physical properties in two-dimensional van der
Waals (vdW) materials and heterostructures. By tuning the layer stacking
pattern, symmetry-breaking and electric polarization can be created in
otherwise non-polar crystals, whose polarization reversal depends on the
interlayer sliding motion. Herein, we demonstrate that in a vdW layered
ferroelectric, its existing polarization is closely coupled to the interlayer
sliding driven by hydrostatic pressure. Through combined structural,
electrical, vibrational characterizations, and theoretical calculations, we
clearly map out the structural evolution of CuInP2S6 under pressure. A tendency
towards a high polarization state is observed in the low-pressure region,
followed by an interlayer-sliding-mediated phase transition from a monoclinic
to a trigonal phase. Along the transformation pathway, the displacive-instable
Cu ion serves as a pivot point that regulates the interlayer interaction in
response to external pressure. The rich phase diagram of CuInP2S6, which is
enabled by stacking orders, sheds light on the physics of vdW ferroelectricity
and opens an alternative route to tailoring long-range order in vdW layered
crystals. |
| first_indexed | 2025-02-19T03:31:52Z |
| format | Journal Article |
| id | ntu-10356/178419 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:31:52Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1784192024-06-24T15:35:02Z Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure Zhou, Zhou Zhang, Jun-Jie Turner, Gemma F. Moggach, Stephen A. Lekina, Yulia Morris, Samuel Wang, Shun Hu, Yiqi Li, Qiankun Xue, Jinshuo Feng, Zhijian Yan, Qingyu Weng, Yuyan Xu, Bin Fang, Yong Shen, Zexiang Fang, Liang Dong, Shuai You, Lu School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) Facility for Analysis, Characterisation, Testing and Simulation Physics Ferroelectric phase transition Interlayer sliding Interlayer stacking order has recently emerged as a unique degree of freedom to control crystal symmetry and physical properties in two-dimensional van der Waals (vdW) materials and heterostructures. By tuning the layer stacking pattern, symmetry-breaking and electric polarization can be created in otherwise non-polar crystals, whose polarization reversal depends on the interlayer sliding motion. Herein, we demonstrate that in a vdW layered ferroelectric, its existing polarization is closely coupled to the interlayer sliding driven by hydrostatic pressure. Through combined structural, electrical, vibrational characterizations, and theoretical calculations, we clearly map out the structural evolution of CuInP2S6 under pressure. A tendency towards a high polarization state is observed in the low-pressure region, followed by an interlayer-sliding-mediated phase transition from a monoclinic to a trigonal phase. Along the transformation pathway, the displacive-instable Cu ion serves as a pivot point that regulates the interlayer interaction in response to external pressure. The rich phase diagram of CuInP2S6, which is enabled by stacking orders, sheds light on the physics of vdW ferroelectricity and opens an alternative route to tailoring long-range order in vdW layered crystals. Published version L.Y. and L.F. acknowledge the support by National Natural Science Foundation of China (No. 12074278), the Natural Science Foundation of the Jiangsu Higher Education Institution of China (No. 20KJA140001), and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions. L. Y. also acknowledges the support from Suzhou Science and Technology Bureau (No. ZXL2022514) and Jiangsu SpeciallyAppointed Professors Program. S.D. acknowledge the support by National Natural Science Foundation of China (No. 12274069). J.-J. Z. acknowledges financial support by the Natural Science Foundation of the Jiangsu Province Grant No. BK20230806. J.-J.Z. and S.D. also thank the Big Data Center of Southeast University for providing the computational resource. S.A.M. acknowledges the support of the Australian Research Council (ARC) from a Future Fellowship (No. FT200100243) and Discovery Project (No. DP220103690). 2024-06-19T01:11:57Z 2024-06-19T01:11:57Z 2024 Journal Article Zhou, Z., Zhang, J., Turner, G. F., Moggach, S. A., Lekina, Y., Morris, S., Wang, S., Hu, Y., Li, Q., Xue, J., Feng, Z., Yan, Q., Weng, Y., Xu, B., Fang, Y., Shen, Z., Fang, L., Dong, S. & You, L. (2024). Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure. Applied Physics Reviews, 11(1), 011414-. https://dx.doi.org/10.1063/5.0177451 1931-9401 https://hdl.handle.net/10356/178419 10.1063/5.0177451 2-s2.0-85185006543 1 11 011414 en Applied Physics Reviews © 2024 Author(s). Published under an exclusive license by AIP Publishing. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1063/5.0177451 application/pdf |
| spellingShingle | Physics Ferroelectric phase transition Interlayer sliding Zhou, Zhou Zhang, Jun-Jie Turner, Gemma F. Moggach, Stephen A. Lekina, Yulia Morris, Samuel Wang, Shun Hu, Yiqi Li, Qiankun Xue, Jinshuo Feng, Zhijian Yan, Qingyu Weng, Yuyan Xu, Bin Fang, Yong Shen, Zexiang Fang, Liang Dong, Shuai You, Lu Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure |
| title | Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure |
| title_full | Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure |
| title_fullStr | Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure |
| title_full_unstemmed | Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure |
| title_short | Sliding-mediated ferroelectric phase transition in CuInP2S6 under pressure |
| title_sort | sliding mediated ferroelectric phase transition in cuinp2s6 under pressure |
| topic | Physics Ferroelectric phase transition Interlayer sliding |
| url | https://hdl.handle.net/10356/178419 |
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