反铁磁性NiPS3的层间相互作用和Davydov分裂

IF 6.2 1区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Quantum Materials Pub Date : 2025-06-20 DOI:10.1038/s41535-025-00788-x

Manh Hong Nguyen, Giung Park, Je-Geun Park, Hyeonsik Cheong

{"title":"反铁磁性NiPS3的层间相互作用和Davydov分裂","authors":"Manh Hong Nguyen, Giung Park, Je-Geun Park, Hyeonsik Cheong","doi":"10.1038/s41535-025-00788-x","DOIUrl":null,"url":null,"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.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"26 1","pages":""},"PeriodicalIF":6.2000,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3\",\"authors\":\"Manh Hong Nguyen, Giung Park, Je-Geun Park, Hyeonsik Cheong\",\"doi\":\"10.1038/s41535-025-00788-x\",\"DOIUrl\":null,\"url\":null,\"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.\",\"PeriodicalId\":19283,\"journal\":{\"name\":\"npj Quantum Materials\",\"volume\":\"26 1\",\"pages\":\"\"},\"PeriodicalIF\":6.2000,\"publicationDate\":\"2025-06-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"npj Quantum Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1038/s41535-025-00788-x\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"npj Quantum Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1038/s41535-025-00788-x","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

利用拉曼光谱分析了层间低频振动模式和~255 cm-1下层内A1g振动模式的Davydov分裂，研究了层间相互作用随温度的变化规律。利用线性链模型从低频拉曼光谱中估计了层间力常数。面外方向层间力常数也可以从Davydov分裂中单独估计出来，与线性链模型分析结果吻合较好。低频剪切和呼吸模式以及Davydov分裂对层数的依赖为确定层数提供了一种独特、可靠的工具。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3

查看原文本刊更多论文

Interlayer interaction and Davydov splitting in antiferromagnetic few-layer NiPS3

Interlayer interactions in few-layer NiPS₃ were investigated by analyzing low-frequency interlayer vibration modes and Davydov splitting of an intralayer, A_1g 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.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

npj Quantum Materials Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

10.60

自引率

3.50%

发文量

107

审稿时长

6 weeks

期刊介绍： npj Quantum Materials is an open access journal that publishes works that significantly advance the understanding of quantum materials, including their fundamental properties, fabrication and applications.