Phonon Interference Effects in GaAs-GaP Superlattice Nanowires
Main article: 22 pages, 4 figures, 41 references. Supplementary: 16 pages, 6 figures, 19 references
| Autores: | ; ; ; ; ; ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Estado: | Published version |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:dnet:digitalcsic_::ac9849f2f897bd57218380fd059b4823 |
| Acceso en línea: | http://hdl.handle.net/10261/432327 http://arxiv.org/abs/2508.09556v1 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | Boundary scattering Nanowires Phonon coherence Phonon interference Superlattice Thermal conductivity |
| _version_ | 1878738539878809600 |
|---|---|
| author | Arya, Chaitanya |
| author2 | Trautvetter, Johannes Sojo Gordillo, Jose M. Kaur, Yashpreet Zannier, Valentina Nigro, Arianna Beltram, Fabio Albrigi, Tommaso Ruiz Caridad, Alicia Sorba, Lucia Rurali, Riccardo Zardo, Ilaria |
| author2_role | author author author author author author author author author author author |
| author_browse | Albrigi, Tommaso Arya, Chaitanya Beltram, Fabio Kaur, Yashpreet Nigro, Arianna Ruiz Caridad, Alicia Rurali, Riccardo Sojo Gordillo, Jose M. Sorba, Lucia Trautvetter, Johannes Zannier, Valentina Zardo, Ilaria |
| author_facet | Arya, Chaitanya Trautvetter, Johannes Sojo Gordillo, Jose M. Kaur, Yashpreet Zannier, Valentina Nigro, Arianna Beltram, Fabio Albrigi, Tommaso Ruiz Caridad, Alicia Sorba, Lucia Rurali, Riccardo Zardo, Ilaria |
| author_role | author |
| collection | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| description | Main article: 22 pages, 4 figures, 41 references. Supplementary: 16 pages, 6 figures, 19 references |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_b0af625f272f2eefa4e178b8c85af2c3 |
| institution | Consejo Superior de Investigaciones Científicas (CSIC) |
| instname_str | Consejo Superior de Investigaciones Científicas (CSIC) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:dnet:digitalcsic_::ac9849f2f897bd57218380fd059b4823 |
| publishDate | 2025 |
| publishDateSort | 2025 |
| publisher | American Chemical Society |
| publisherStr | American Chemical Society |
| reponame_str | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| spelling | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires Arya, Chaitanya Trautvetter, Johannes Sojo Gordillo, Jose M. Kaur, Yashpreet Zannier, Valentina Nigro, Arianna Beltram, Fabio Albrigi, Tommaso Ruiz Caridad, Alicia Sorba, Lucia Rurali, Riccardo Zardo, Ilaria Boundary scattering Nanowires Phonon coherence Phonon interference Superlattice Thermal conductivity Main article: 22 pages, 4 figures, 41 references. Supplementary: 16 pages, 6 figures, 19 references Fine-tuning the functional properties of nanomaterials is crucial for technological applications. Superlattices, characterized by periodic repetitions of two or more materials in different dimensions, have emerged as promising areas of investigation. We present a study of the phonon interference effect on thermal transport in GaAs-GaP superlattice nanowires with sharp interfaces between the GaAs and GaP layers, as confirmed by high-resolution transmission electron microscopy. We performed thermal conductivity measurements using the so-called thermal bridge method on superlattice nanowires with a period varying from 4.8 to 23.3 nm. The measurements showed a minimum of the thermal conductivity as a function of superlattice period up to room temperature that we interpreted as an indication of the crossover from coherent to incoherent thermal transport. This effect is not destroyed by the surface boundary or by phonon-phonon scattering, as the crossover trend is also observed at room temperature. Our results were corroborated by both ab initio lattice dynamics and semiclassical nonequilibrium molecular dynamics calculations. These findings provide insights into the wave-like and particle-like transport of phonons in superlattice nanowires and demonstrate the potential for engineering thermal properties through precise control of the superlattice structure. We thank Grazia Raciti and Alexander Vogel for fruitful discussion and technical support. R.R. thanks Jesús Carrete for useful discussions. This project has received funding from the Swiss National Science Foundation grant (Grant No. 200021_184942), from Eucor, The European Campus (Marie Sklodowska-Curie QUSTEC grant agreement no. 847471), and from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement No 756365). R.R. acknowledges financial support by MCIN/AEI/10.13039/501100011033 under grant PID2024-162811NB-I00, the Severo Ochoa Centres of Excellence Program under grant CEX2023-001263-S, and the Generalitat de Catalunya under grant 2021 SGR 01519. We thank the Centro de Supercomputación de Galicia (CESGA) for the use of their computational resources. V.Z acknowledges financial support from the PRIN project 20223WZ245 – GROUNDS – “Growth and optical studies of tunable quantum dots and superlattices in semiconductor nanowires”. F.B. and L.S. acknowledge financial support from PNRR MUR project PE0000023-NQSTI. With funding from the Spanish government through the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2023-001263-S). Peer reviewed American Chemical Society http://hdl.handle.net/10261/432327 http://arxiv.org/abs/2508.09556v1 |
| spellingShingle | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires Arya, Chaitanya Boundary scattering Nanowires Phonon coherence Phonon interference Superlattice Thermal conductivity |
| status_str | publishedVersion |
| title | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires |
| title_full | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires |
| title_fullStr | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires |
| title_full_unstemmed | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires |
| title_short | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires |
| title_sort | Phonon Interference Effects in GaAs-GaP Superlattice Nanowires |
| topic | Boundary scattering Nanowires Phonon coherence Phonon interference Superlattice Thermal conductivity |
| topic_facet | Boundary scattering Nanowires Phonon coherence Phonon interference Superlattice Thermal conductivity |
| url | http://hdl.handle.net/10261/432327 http://arxiv.org/abs/2508.09556v1 |