Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms
Abstract Due to its “ferroionic” nature, CuInP2S6 combines switchable ferroelectric polarization with highly mobile Cu ions, allowing for multiple resistance states. Its conductive mechanism involves ferroelectric switching, ion migration, and corresponding intercoupling, which are highly sensitive...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55160-7 |
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| author | Xingan Jiang Xiangping Zhang Zunyi Deng Jianming Deng Xiaolei Wang Xueyun Wang Weiyou Yang |
| author_facet | Xingan Jiang Xiangping Zhang Zunyi Deng Jianming Deng Xiaolei Wang Xueyun Wang Weiyou Yang |
| author_sort | Xingan Jiang |
| collection | DOAJ |
| description | Abstract Due to its “ferroionic” nature, CuInP2S6 combines switchable ferroelectric polarization with highly mobile Cu ions, allowing for multiple resistance states. Its conductive mechanism involves ferroelectric switching, ion migration, and corresponding intercoupling, which are highly sensitive to external electric field. Distinguishing the dominant contribution of either ferroelectric switching or ion migration to dynamic conductivity remains a challenge and the conductive mechanism is not clear yet. Here, based on polarization switching analyses and first-principles calculations, this work demonstrates that the Cu ion migration pathways enable the formation of a quadruple-well state, determining the conductive mechanism. Accordingly, it favors the manipulation of Cu ion transport in the intralayer and interlayer in a controlled manner, and makes a transition from ferroelectric-dominated to ion-migration-dominated conductivity, by tailoring the electric fields. This work deepens the understanding of ion migration dynamics and conductive switching in ferroionic systems, which is critical for the advancement of memristor-based neuromorphic computing. |
| format | Article |
| id | doaj-art-460c895f05ab46fb83f771893ce5af5b |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-460c895f05ab46fb83f771893ce5af5b2025-01-05T12:36:13ZengNature PortfolioNature Communications2041-17232024-12-0115111010.1038/s41467-024-55160-7Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanismsXingan Jiang0Xiangping Zhang1Zunyi Deng2Jianming Deng3Xiaolei Wang4Xueyun Wang5Weiyou Yang6Institute of Micro/Nano Materials and Devices, Ningbo University of TechnologyDepartment of Materials Science and Engineering, Southern University of Science and TechnologySchool of Aerospace Engineering, Beijing Institute of TechnologyGuangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou UniversitySchool of Physics and Optoelectronic Engineering, Beijing University of TechnologySchool of Aerospace Engineering, Beijing Institute of TechnologyInstitute of Micro/Nano Materials and Devices, Ningbo University of TechnologyAbstract Due to its “ferroionic” nature, CuInP2S6 combines switchable ferroelectric polarization with highly mobile Cu ions, allowing for multiple resistance states. Its conductive mechanism involves ferroelectric switching, ion migration, and corresponding intercoupling, which are highly sensitive to external electric field. Distinguishing the dominant contribution of either ferroelectric switching or ion migration to dynamic conductivity remains a challenge and the conductive mechanism is not clear yet. Here, based on polarization switching analyses and first-principles calculations, this work demonstrates that the Cu ion migration pathways enable the formation of a quadruple-well state, determining the conductive mechanism. Accordingly, it favors the manipulation of Cu ion transport in the intralayer and interlayer in a controlled manner, and makes a transition from ferroelectric-dominated to ion-migration-dominated conductivity, by tailoring the electric fields. This work deepens the understanding of ion migration dynamics and conductive switching in ferroionic systems, which is critical for the advancement of memristor-based neuromorphic computing.https://doi.org/10.1038/s41467-024-55160-7 |
| spellingShingle | Xingan Jiang Xiangping Zhang Zunyi Deng Jianming Deng Xiaolei Wang Xueyun Wang Weiyou Yang Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms Nature Communications |
| title | Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms |
| title_full | Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms |
| title_fullStr | Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms |
| title_full_unstemmed | Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms |
| title_short | Dual-role ion dynamics in ferroionic CuInP2S6: revealing the transition from ferroelectric to ionic switching mechanisms |
| title_sort | dual role ion dynamics in ferroionic cuinp2s6 revealing the transition from ferroelectric to ionic switching mechanisms |
| url | https://doi.org/10.1038/s41467-024-55160-7 |
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