Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃
The flexomagnetic effect involves the coupling of inhomogeneous mechanical and magnetic excitations to generate exotic spin orders. The intrinsic edge stress associated with lifting of periodic degeneracy at surfaces or edges in nanostructures facilitates the flexocoupling effects. Here, we combine...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/173731 |
| _version_ | 1811676303426846720 |
|---|---|
| author | Qiu, Guotao Li, Zongjin Zhou, Kun Cai, Yongqing |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Qiu, Guotao Li, Zongjin Zhou, Kun Cai, Yongqing |
| author_sort | Qiu, Guotao |
| collection | NTU |
| description | The flexomagnetic effect involves the coupling of inhomogeneous mechanical and magnetic excitations to generate exotic spin orders. The intrinsic edge stress associated with lifting of periodic degeneracy at surfaces or edges in nanostructures facilitates the flexocoupling effects. Here, we combine first-principles calculation and Maximum Information Coefficient (MIC) statistics to quantitatively reveal the impact of bending on the geometries, spin ordering state, and exchange interactions in chromium triiodide (CrI3) nanoribbons. Our results reveal a divergent magnetic ground state at small curvature but a plumb line shape noncollinear state at large curvatures. More importantly, our work establishes a gradient dependence of the exchange coupling on the locally asymmetric bending angles of the Cr-I-Cr hinge, governed by the coupling of the t2g and eg states of Cr. The superexchange gradient accompanied with the bending-induced inhomogeneous deformation sheds light on the evolution of magnetic ordering associated with asymmetric coordinating systems for sensors and spintronics. |
| first_indexed | 2024-10-01T02:19:20Z |
| format | Journal Article |
| id | ntu-10356/173731 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:19:20Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1737312024-03-02T16:47:47Z Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ Qiu, Guotao Li, Zongjin Zhou, Kun Cai, Yongqing School of Mechanical and Aerospace Engineering Engineering Flexomagnetic effect Noncollinear state The flexomagnetic effect involves the coupling of inhomogeneous mechanical and magnetic excitations to generate exotic spin orders. The intrinsic edge stress associated with lifting of periodic degeneracy at surfaces or edges in nanostructures facilitates the flexocoupling effects. Here, we combine first-principles calculation and Maximum Information Coefficient (MIC) statistics to quantitatively reveal the impact of bending on the geometries, spin ordering state, and exchange interactions in chromium triiodide (CrI3) nanoribbons. Our results reveal a divergent magnetic ground state at small curvature but a plumb line shape noncollinear state at large curvatures. More importantly, our work establishes a gradient dependence of the exchange coupling on the locally asymmetric bending angles of the Cr-I-Cr hinge, governed by the coupling of the t2g and eg states of Cr. The superexchange gradient accompanied with the bending-induced inhomogeneous deformation sheds light on the evolution of magnetic ordering associated with asymmetric coordinating systems for sensors and spintronics. Published version This work was supported by the National Key R&D Program of China (Grant 2019YFB16007), the National Natural Science Foundation of China (Grant 22022309), and the Natural Science Foundation of Guangdong Province, China (2021A1515010024), the University of Macau (MYRG2020-00075-IAPME), the Science and Technology Development Fund from Macau SAR (FDCT-0163/2019/A3). 2024-02-26T02:37:22Z 2024-02-26T02:37:22Z 2023 Journal Article Qiu, G., Li, Z., Zhou, K. & Cai, Y. (2023). Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃. Npj Quantum Materials, 8(1). https://dx.doi.org/10.1038/s41535-023-00547-w 2397-4648 https://hdl.handle.net/10356/173731 10.1038/s41535-023-00547-w 2-s2.0-85150284326 1 8 en npj Quantum Materials © The Author(s) 2023. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http:// creativecommons.org/licenses/by/4.0/. application/pdf |
| spellingShingle | Engineering Flexomagnetic effect Noncollinear state Qiu, Guotao Li, Zongjin Zhou, Kun Cai, Yongqing Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ |
| title | Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ |
| title_full | Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ |
| title_fullStr | Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ |
| title_full_unstemmed | Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ |
| title_short | Flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two-dimensional magnetic CrI₃ |
| title_sort | flexomagnetic noncollinear state with a plumb line shape spin configuration in edged two dimensional magnetic cri₃ |
| topic | Engineering Flexomagnetic effect Noncollinear state |
| url | https://hdl.handle.net/10356/173731 |
| work_keys_str_mv | AT qiuguotao flexomagneticnoncollinearstatewithaplumblineshapespinconfigurationinedgedtwodimensionalmagneticcri3 AT lizongjin flexomagneticnoncollinearstatewithaplumblineshapespinconfigurationinedgedtwodimensionalmagneticcri3 AT zhoukun flexomagneticnoncollinearstatewithaplumblineshapespinconfigurationinedgedtwodimensionalmagneticcri3 AT caiyongqing flexomagneticnoncollinearstatewithaplumblineshapespinconfigurationinedgedtwodimensionalmagneticcri3 |