Cargando…

Dynamically-enhanced strain in atomically thin resonators

Graphene and related two-dimensional (2D) materials associate remarkable mechanical, electronic, optical and phononic properties. As such, 2D materials are promising for hybrid systems that couple their elementary excitations (excitons, phonons) to their macroscopic mechanical modes. These built-in...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhang, Xin, Makles, Kevin, Colombier, Léo, Metten, Dominik, Majjad, Hicham, Verlot, Pierre, Berciaud, Stéphane
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7608634/
https://www.ncbi.nlm.nih.gov/pubmed/33139724
http://dx.doi.org/10.1038/s41467-020-19261-3
_version_ 1783604875383275520
author Zhang, Xin
Makles, Kevin
Colombier, Léo
Metten, Dominik
Majjad, Hicham
Verlot, Pierre
Berciaud, Stéphane
author_facet Zhang, Xin
Makles, Kevin
Colombier, Léo
Metten, Dominik
Majjad, Hicham
Verlot, Pierre
Berciaud, Stéphane
author_sort Zhang, Xin
collection PubMed
description Graphene and related two-dimensional (2D) materials associate remarkable mechanical, electronic, optical and phononic properties. As such, 2D materials are promising for hybrid systems that couple their elementary excitations (excitons, phonons) to their macroscopic mechanical modes. These built-in systems may yield enhanced strain-mediated coupling compared to bulkier architectures, e.g., comprising a single quantum emitter coupled to a nano-mechanical resonator. Here, using micro-Raman spectroscopy on pristine monolayer graphene drums, we demonstrate that the macroscopic flexural vibrations of graphene induce dynamical optical phonon softening. This softening is an unambiguous fingerprint of dynamically-induced tensile strain that reaches values up to ≈4 × 10(−4) under strong non-linear driving. Such non-linearly enhanced strain exceeds the values predicted for harmonic vibrations with the same root mean square (RMS) amplitude by more than one order of magnitude. Our work holds promise for dynamical strain engineering and dynamical strain-mediated control of light-matter interactions in 2D materials and related heterostructures.
format Online
Article
Text
id pubmed-7608634
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-76086342020-11-10 Dynamically-enhanced strain in atomically thin resonators Zhang, Xin Makles, Kevin Colombier, Léo Metten, Dominik Majjad, Hicham Verlot, Pierre Berciaud, Stéphane Nat Commun Article Graphene and related two-dimensional (2D) materials associate remarkable mechanical, electronic, optical and phononic properties. As such, 2D materials are promising for hybrid systems that couple their elementary excitations (excitons, phonons) to their macroscopic mechanical modes. These built-in systems may yield enhanced strain-mediated coupling compared to bulkier architectures, e.g., comprising a single quantum emitter coupled to a nano-mechanical resonator. Here, using micro-Raman spectroscopy on pristine monolayer graphene drums, we demonstrate that the macroscopic flexural vibrations of graphene induce dynamical optical phonon softening. This softening is an unambiguous fingerprint of dynamically-induced tensile strain that reaches values up to ≈4 × 10(−4) under strong non-linear driving. Such non-linearly enhanced strain exceeds the values predicted for harmonic vibrations with the same root mean square (RMS) amplitude by more than one order of magnitude. Our work holds promise for dynamical strain engineering and dynamical strain-mediated control of light-matter interactions in 2D materials and related heterostructures. Nature Publishing Group UK 2020-11-02 /pmc/articles/PMC7608634/ /pubmed/33139724 http://dx.doi.org/10.1038/s41467-020-19261-3 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhang, Xin
Makles, Kevin
Colombier, Léo
Metten, Dominik
Majjad, Hicham
Verlot, Pierre
Berciaud, Stéphane
Dynamically-enhanced strain in atomically thin resonators
title Dynamically-enhanced strain in atomically thin resonators
title_full Dynamically-enhanced strain in atomically thin resonators
title_fullStr Dynamically-enhanced strain in atomically thin resonators
title_full_unstemmed Dynamically-enhanced strain in atomically thin resonators
title_short Dynamically-enhanced strain in atomically thin resonators
title_sort dynamically-enhanced strain in atomically thin resonators
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7608634/
https://www.ncbi.nlm.nih.gov/pubmed/33139724
http://dx.doi.org/10.1038/s41467-020-19261-3
work_keys_str_mv AT zhangxin dynamicallyenhancedstraininatomicallythinresonators
AT makleskevin dynamicallyenhancedstraininatomicallythinresonators
AT colombierleo dynamicallyenhancedstraininatomicallythinresonators
AT mettendominik dynamicallyenhancedstraininatomicallythinresonators
AT majjadhicham dynamicallyenhancedstraininatomicallythinresonators
AT verlotpierre dynamicallyenhancedstraininatomicallythinresonators
AT berciaudstephane dynamicallyenhancedstraininatomicallythinresonators