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Customizing Radiative Decay Dynamics of Two-Dimensional Excitons via Position- and Polarization-Dependent Vacuum-Field Interference

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Title
Customizing Radiative Decay Dynamics of Two-Dimensional Excitons via Position- and Polarization-Dependent Vacuum-Field Interference
Author(s)
Park, Sanghyeok; Kim, Dongha; Choi, Yun-Seok; Baucour, Arthur; Kim, Donghyeong; Sangho Yoon; Watanabe, Kenji; Taniguchi, Takashi; Shin, Jonghwa; Jonghwan Kim; Seo, Min-Kyo
Publication Date
2023-03
Journal
Nano Letters, v.23, no.6, pp.2158 - 2165
Publisher
American Chemical Society
Abstract
Embodying bosonic and interactive characteristics in two-dimensional space, excitons in transition metal dichalcogenides (TMDCs) have garnered considerable attention. The utilization of the strong-correlation effects, long-range transport, and valley-dependent properties requires customizing exciton decay dynamics. Vacuum-field manipulation allows radiative decay engineering without disturbing intrinsic material properties. However, conventional flat mirrors cannot customize the radiative decay landscape in TMDC’s plane or support vacuum-field interference with desired spectrum and polarization properties. Here, we present a meta-mirror platform resolving the issues with more optical degrees of freedom. For neutral excitons of the monolayer MoSe2, the optical layout formed by meta-mirrors manipulated the radiative decay rate in space by 2 orders of magnitude and revealed the statistical correlation between emission intensity and spectral line width. Moreover, the anisotropic meta-mirror demonstrated polarization-dependent radiative decay control. Our platform would be promising to tailor two-dimensional distributions of lifetime, density, diffusion, and polarization of TMDC excitons in advanced opto-excitonic applications.
URI
https://pr.ibs.re.kr/handle/8788114/13193
DOI
10.1021/acs.nanolett.2c04604
ISSN
1530-6984
Appears in Collections:
Center for Van der Waals Quantum Solids(반데르발스 양자 물질 연구단) > 1. Journal Papers (저널논문)
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