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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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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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 |
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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 |
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