Salvato in:
| Autori principali: | , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2026
|
| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2601.12852 |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866917253819138048 |
|---|---|
| author | Heng, Wu Miao-Ling, Lin Sen, Yan Lin-Shang, Chen Wang, Zhong-Jie Yi-Fei, Zhang Ti-Ying, Zhu Zheng-Yu, Su Jun, Wang Liu, Liu Xue-Lu Zhong-Ming, Wei Yan-Meng, Shi Xiang, Wang Bin, Ren Ping-Heng, Tan |
| author_facet | Heng, Wu Miao-Ling, Lin Sen, Yan Lin-Shang, Chen Wang, Zhong-Jie Yi-Fei, Zhang Ti-Ying, Zhu Zheng-Yu, Su Jun, Wang Liu, Liu Xue-Lu Zhong-Ming, Wei Yan-Meng, Shi Xiang, Wang Bin, Ren Ping-Heng, Tan |
| contents | Conventional Raman spectroscopy faces inherent limitations in detecting interlayer layer breathing (LB) vibrations with inherently weak electron-phonon coupling or Raman inactivity in two-dimensional materials, hindering insights into interfacial coupling and stacking dynamics. Here we demonstrate a universal plasmon-enhanced Raman spectroscopy strategy using gold or silver nanocavities to strongly enhance and detect LB modes in multilayer graphene, hBN, and their van der Waals heterostructures. Plasmonic nanocavities even modify the linear and circular polarization selection rules of the LB vibrations. By developing an electric-field-modulated interlayer bond polarizability model, we quantitatively explain the observed intensity profiles and reveal the synergistic roles of localized plasmonic field enhancement and interfacial polarizability modulation. This model successfully describes the behavior across different material systems and nanocavity geometries. This work not only overcomes traditional detection barriers but also provides a quantitative framework for probing interlayer interactions, offering a versatile platform for investigating hidden interfacial phonons and advancing the characterization of layered quantum materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_12852 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Plasmonic nanocavity-enabled universal detection of layer-breathing vibrations in two-dimensional materials Heng, Wu Miao-Ling, Lin Sen, Yan Lin-Shang, Chen Wang, Zhong-Jie Yi-Fei, Zhang Ti-Ying, Zhu Zheng-Yu, Su Jun, Wang Liu, Liu Xue-Lu Zhong-Ming, Wei Yan-Meng, Shi Xiang, Wang Bin, Ren Ping-Heng, Tan Mesoscale and Nanoscale Physics Conventional Raman spectroscopy faces inherent limitations in detecting interlayer layer breathing (LB) vibrations with inherently weak electron-phonon coupling or Raman inactivity in two-dimensional materials, hindering insights into interfacial coupling and stacking dynamics. Here we demonstrate a universal plasmon-enhanced Raman spectroscopy strategy using gold or silver nanocavities to strongly enhance and detect LB modes in multilayer graphene, hBN, and their van der Waals heterostructures. Plasmonic nanocavities even modify the linear and circular polarization selection rules of the LB vibrations. By developing an electric-field-modulated interlayer bond polarizability model, we quantitatively explain the observed intensity profiles and reveal the synergistic roles of localized plasmonic field enhancement and interfacial polarizability modulation. This model successfully describes the behavior across different material systems and nanocavity geometries. This work not only overcomes traditional detection barriers but also provides a quantitative framework for probing interlayer interactions, offering a versatile platform for investigating hidden interfacial phonons and advancing the characterization of layered quantum materials. |
| title | Plasmonic nanocavity-enabled universal detection of layer-breathing vibrations in two-dimensional materials |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2601.12852 |