TY - JOUR

T1 - Exciton radiative lifetime in a monoatomic carbon chain

AU - Kutrovskaya, Stella

AU - Demirchyan, Sevak

AU - Osipov, Anton

AU - Baryshev, Stepan

AU - Zasedatelev, Anton

AU - Lagoudakis, Pavlos

AU - Kavokin, Alexey

N1 - Funding Information: The work is supported by Westlake University, Project 041020100118 and Program 2018R01002 funded by Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang, by MSHE within the State assignment VlSU 0635-2020-0013. SD acknowledges the support from the Grant of the President of the Russian Federation for state support of young Russian scientists No. MK-5318.2021.1.2. AK acknowledges the support from Rosatom within the Road map for quantum computing. SB, AZ, and PL acknowledge RFBR Grants No. 20-52-12026 (jointly with DFG), and 20-02-00919. AZ acknowledge financial support by the Russian Science Foundation (RScF) Grant No. 20-72-10145. Funding Information: Original content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Russian Foundation for Basic Research https://doi.org/10.13039/501100002261 20-02-00919 20-52-12026 Russian Science Foundation https://doi.org/10.13039/501100006769 20-72-10145 Grant of the President of the Russian Federation MK-5318.2021.1.2. Westlake University 041020100118 Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang 2018R01002 State assignment VlSU 0635-2020- 0013 yes � 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft Creative Commons Attribution 4.0 licence Publisher Copyright: © 2021 The Author(s).

PY - 2021/3

Y1 - 2021/3

N2 - Linear carbon-based materials such as polyyne and cumulene oligomers provide a versatile platform for nano-physics and engineering. Direct gap quasi-1D polyyne structures are promising for the observation of strong and unusual excitonic effects arising due to the two-dimensional quantum confinement. Recently, we reported on the observation of sharp exciton peaks in low temperature photoluminescence spectra of polyyne chains (Kutrovskaya S et al 2020 Nano Lett. 20 6502–9). Here, we analyze the time-resolved optical response of this system. We extend the non-local dielectric response theory to predict the exciton radiative lifetime dependence on the band-gap value and on the length of the chain. A good agreement between the experiment and the theory is achieved.

AB - Linear carbon-based materials such as polyyne and cumulene oligomers provide a versatile platform for nano-physics and engineering. Direct gap quasi-1D polyyne structures are promising for the observation of strong and unusual excitonic effects arising due to the two-dimensional quantum confinement. Recently, we reported on the observation of sharp exciton peaks in low temperature photoluminescence spectra of polyyne chains (Kutrovskaya S et al 2020 Nano Lett. 20 6502–9). Here, we analyze the time-resolved optical response of this system. We extend the non-local dielectric response theory to predict the exciton radiative lifetime dependence on the band-gap value and on the length of the chain. A good agreement between the experiment and the theory is achieved.

KW - Exciton transitions

KW - Polyyne chains

KW - Radiative lifetime

KW - exciton transitions

KW - polyyne chains

KW - radiative lifetime

UR - http://www.scopus.com/inward/record.url?scp=85102979286&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/4abdc6b3-d964-3b6b-b661-92cbc7e0ab45/

U2 - 10.1088/1367-2630/abe505

DO - 10.1088/1367-2630/abe505

M3 - Article

AN - SCOPUS:85102979286

VL - 23

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 3

M1 - 033007

ER -