The effect of echoes interference on phonon attenuation in a nanophononic membrane
Abstract Nanophononic materials are characterized by a periodic nanostructuration, which may lead to coherent scattering of phonons, enabling interference and resulting in modified phonon dispersions. We have used the extreme ultraviolet transient grating technique to measure phonon frequencies and...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-02-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-45571-x |
| _version_ | 1797273930437754880 |
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| author | Mohammad Hadi Haoming Luo Stéphane Pailhès Anne Tanguy Anthony Gravouil Flavio Capotondi Dario De Angelis Danny Fainozzi Laura Foglia Riccardo Mincigrucci Ettore Paltanin Emanuele Pedersoli Jacopo S. Pelli-Cresi Filippo Bencivenga Valentina M. Giordano |
| author_facet | Mohammad Hadi Haoming Luo Stéphane Pailhès Anne Tanguy Anthony Gravouil Flavio Capotondi Dario De Angelis Danny Fainozzi Laura Foglia Riccardo Mincigrucci Ettore Paltanin Emanuele Pedersoli Jacopo S. Pelli-Cresi Filippo Bencivenga Valentina M. Giordano |
| author_sort | Mohammad Hadi |
| collection | DOAJ |
| description | Abstract Nanophononic materials are characterized by a periodic nanostructuration, which may lead to coherent scattering of phonons, enabling interference and resulting in modified phonon dispersions. We have used the extreme ultraviolet transient grating technique to measure phonon frequencies and lifetimes in a low-roughness nanoporous phononic membrane of SiN at wavelengths between 50 and 100 nm, comparable to the nanostructure lengthscale. Surprisingly, phonon frequencies are only slightly modified upon nanostructuration, while phonon lifetime is strongly reduced. Finite element calculations indicate that this is due to coherent phonon interference, which becomes dominant for wavelengths between ~ half and twice the inter-pores distance. Despite this, vibrational energy transport is ensured through an energy flow among the coherent modes created by reflections. This interference of phonon echos from periodic interfaces is likely another aspect of the mutual coherence effects recently highlighted in amorphous and complex crystalline materials and, in this context, could be used to tailor transport properties of nanostructured materials. |
| first_indexed | 2024-03-07T14:51:10Z |
| format | Article |
| id | doaj.art-112f637a0fff444f8b7220edbf16343d |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-07T14:51:10Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-112f637a0fff444f8b7220edbf16343d2024-03-05T19:39:27ZengNature PortfolioNature Communications2041-17232024-02-011511910.1038/s41467-024-45571-xThe effect of echoes interference on phonon attenuation in a nanophononic membraneMohammad Hadi0Haoming Luo1Stéphane Pailhès2Anne Tanguy3Anthony Gravouil4Flavio Capotondi5Dario De Angelis6Danny Fainozzi7Laura Foglia8Riccardo Mincigrucci9Ettore Paltanin10Emanuele Pedersoli11Jacopo S. Pelli-Cresi12Filippo Bencivenga13Valentina M. Giordano14University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière MatièreUniversity of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière MatièreUniversity of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière MatièreLaMCos, INSA-Lyon, CNRS UMR5259, Université de LyonLaMCos, INSA-Lyon, CNRS UMR5259, Université de LyonElettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.Elettra Sincrotrone Trieste S.c.P.A.University of Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière MatièreAbstract Nanophononic materials are characterized by a periodic nanostructuration, which may lead to coherent scattering of phonons, enabling interference and resulting in modified phonon dispersions. We have used the extreme ultraviolet transient grating technique to measure phonon frequencies and lifetimes in a low-roughness nanoporous phononic membrane of SiN at wavelengths between 50 and 100 nm, comparable to the nanostructure lengthscale. Surprisingly, phonon frequencies are only slightly modified upon nanostructuration, while phonon lifetime is strongly reduced. Finite element calculations indicate that this is due to coherent phonon interference, which becomes dominant for wavelengths between ~ half and twice the inter-pores distance. Despite this, vibrational energy transport is ensured through an energy flow among the coherent modes created by reflections. This interference of phonon echos from periodic interfaces is likely another aspect of the mutual coherence effects recently highlighted in amorphous and complex crystalline materials and, in this context, could be used to tailor transport properties of nanostructured materials.https://doi.org/10.1038/s41467-024-45571-x |
| spellingShingle | Mohammad Hadi Haoming Luo Stéphane Pailhès Anne Tanguy Anthony Gravouil Flavio Capotondi Dario De Angelis Danny Fainozzi Laura Foglia Riccardo Mincigrucci Ettore Paltanin Emanuele Pedersoli Jacopo S. Pelli-Cresi Filippo Bencivenga Valentina M. Giordano The effect of echoes interference on phonon attenuation in a nanophononic membrane Nature Communications |
| title | The effect of echoes interference on phonon attenuation in a nanophononic membrane |
| title_full | The effect of echoes interference on phonon attenuation in a nanophononic membrane |
| title_fullStr | The effect of echoes interference on phonon attenuation in a nanophononic membrane |
| title_full_unstemmed | The effect of echoes interference on phonon attenuation in a nanophononic membrane |
| title_short | The effect of echoes interference on phonon attenuation in a nanophononic membrane |
| title_sort | effect of echoes interference on phonon attenuation in a nanophononic membrane |
| url | https://doi.org/10.1038/s41467-024-45571-x |
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