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DC Field | Value | Language |
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dc.citation.number | 1 | - |
dc.citation.startPage | 66 | - |
dc.citation.title | NPJ 2D MATERIALS AND APPLICATIONS | - |
dc.citation.volume | 7 | - |
dc.contributor.author | Rahaman, Mahfujur | - |
dc.contributor.author | Kim, Gwangwoo | - |
dc.contributor.author | Ma, Kyung Yeol | - |
dc.contributor.author | Song, Seunguk | - |
dc.contributor.author | Shin, Hyeon Suk | - |
dc.contributor.author | Jariwala, Deep | - |
dc.date.accessioned | 2023-12-21T11:43:57Z | - |
dc.date.available | 2023-12-21T11:43:57Z | - |
dc.date.created | 2023-10-13 | - |
dc.date.issued | 2023-09 | - |
dc.description.abstract | Control of excitons in transition metal dichalcogenides (TMDCs) and their heterostructures is fundamentally interesting for tailoring light-matter interactions and exploring their potential applications in high-efficiency optoelectronic and nonlinear photonic devices. While both intra- and interlayer excitons in TMDCs have been heavily studied, their behavior in the quantum tunneling regime, in which the TMDC or its heterostructure is optically excited and concurrently serves as a tunnel junction barrier, remains unexplored. Here, using the degree of freedom of a metallic probe in an atomic force microscope, we investigated both intralayer and interlayer excitons dynamics in TMDC heterobilayers via locally controlled junction current in a finely tuned sub-nanometer tip-sample cavity. Our tip-enhanced photoluminescence measurements reveal a significantly different exciton-quantum plasmon coupling for intralayer and interlayer excitons due to different orientation of the dipoles of the respective e-h pairs. Using a steady-state rate equation fit, we extracted field gradients, radiative and nonradiative relaxation rates for excitons in the quantum tunneling regime with and without junction current. Our results show that tip-induced radiative (nonradiative) relaxation of intralayer (interlayer) excitons becomes dominant in the quantum tunneling regime due to the Purcell effect. These findings have important implications for near-field probing of excitonic materials in the strong-coupling regime. | - |
dc.identifier.bibliographicCitation | NPJ 2D MATERIALS AND APPLICATIONS, v.7, no.1, pp.66 | - |
dc.identifier.doi | 10.1038/s41699-023-00428-7 | - |
dc.identifier.issn | 2397-7132 | - |
dc.identifier.scopusid | 2-s2.0-85170390387 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/66087 | - |
dc.identifier.wosid | 001066458100002 | - |
dc.language | 영어 | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.title | Tailoring exciton dynamics in TMDC heterobilayers in the ultranarrow gap-plasmon regime | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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