Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3
Abstract Interlayer interactions in few-layer NiPS3 were investigated by analyzing low-frequency interlayer vibration modes and Davydov splitting of an intralayer, A1g vibration mode at ~255 cm–1 by Raman spectroscopy as a function of temperature. The interlayer force constants were estimated from t...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-06-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-025-00788-x |
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| author | Manh Hong Nguyen Giung Park Je-Geun Park Hyeonsik Cheong |
| author_facet | Manh Hong Nguyen Giung Park Je-Geun Park Hyeonsik Cheong |
| author_sort | Manh Hong Nguyen |
| collection | DOAJ |
| description | Abstract Interlayer interactions in few-layer NiPS3 were investigated by analyzing low-frequency interlayer vibration modes and Davydov splitting of an intralayer, A1g vibration mode at ~255 cm–1 by Raman spectroscopy as a function of temperature. The interlayer force constants were estimated from the low-frequency Raman spectra by using the linear chain model. The out-of-plane direction interlayer force constant could also be estimated separately from the Davydov splitting, which agrees well with the linear chain model analysis. The dependence of the low-frequency shear and breathing modes and the Davydov splitting on the number of layers provide a unique, reliable tool for determining the number of layers. |
| format | Article |
| id | doaj-art-07ce27a4dee744e39de17cc78c3e28e2 |
| institution | DOAJ |
| issn | 2397-4648 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj-art-07ce27a4dee744e39de17cc78c3e28e22025-08-20T03:22:46ZengNature Portfolionpj Quantum Materials2397-46482025-06-011011510.1038/s41535-025-00788-xInterlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3Manh Hong Nguyen0Giung Park1Je-Geun Park2Hyeonsik Cheong3Department of Physics and Center for Nano Materials, Sogang UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Astronomy, Seoul National UniversityDepartment of Physics and Center for Nano Materials, Sogang UniversityAbstract Interlayer interactions in few-layer NiPS3 were investigated by analyzing low-frequency interlayer vibration modes and Davydov splitting of an intralayer, A1g vibration mode at ~255 cm–1 by Raman spectroscopy as a function of temperature. The interlayer force constants were estimated from the low-frequency Raman spectra by using the linear chain model. The out-of-plane direction interlayer force constant could also be estimated separately from the Davydov splitting, which agrees well with the linear chain model analysis. The dependence of the low-frequency shear and breathing modes and the Davydov splitting on the number of layers provide a unique, reliable tool for determining the number of layers.https://doi.org/10.1038/s41535-025-00788-x |
| spellingShingle | Manh Hong Nguyen Giung Park Je-Geun Park Hyeonsik Cheong Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3 npj Quantum Materials |
| title | Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3 |
| title_full | Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3 |
| title_fullStr | Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3 |
| title_full_unstemmed | Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3 |
| title_short | Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3 |
| title_sort | interlayer interaction and davydov splitting in antiferromagnetic few layer nips3 |
| url | https://doi.org/10.1038/s41535-025-00788-x |
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