Engineering nanoscale hypersonic phonon transport
Florez, Omar (Universitat Autònoma de Barcelona. Departament de Física)
Arregui Bravo, Guillermo (Institut Català de Nanociència i Nanotecnologia)
Albrechtsen, Marcus (Technical University of Denmark. Department of Photonics Engineering)
Ng, Ryan C. (Institut Català de Nanociència i Nanotecnologia)
Gomis-Bresco, Jordi (Institut Català de Nanociència i Nanotecnologia)
Stobbe, Søren (Technical University of Denmark. Department of Photonics Engineering)
Sotomayor Torres, Clivia M (Institut Català de Nanociència i Nanotecnologia)
García Fernández, Pedro David (Institut Català de Nanociència i Nanotecnologia)

Date:	2022
Abstract:	Controlling the vibrations in solids is crucial to tailor their mechanical properties and their interaction with light. Thermal vibrations represent a source of noise and dephasing for many physical processes at the quantum level. One strategy to avoid these vibrations is to structure a solid such that it possesses a phononic stop band, i. e. , a frequency range over which there are no available mechanical modes. Here, we demonstrate the complete absence of mechanical vibrations at room temperature over a broad spectral window, with a 5. 3 GHz wide band gap centered at 8. 4 GHz in a patterned silicon nanostructure membrane measured using Brillouin light scattering spectroscopy. By constructing a line-defect waveguide, we directly measure GHz localized modes at room temperature. Our experimental results of thermally excited guided mechanical modes at GHz frequencies provides an eficient platform for photon-phonon integration with applications in optomechanics and signal processing transduction.
Grants:	European Commission 897148 European Commission 824140 European Commission 754558 Agencia Estatal de Investigación RTI2018-093921-A-C44 Ministerio de Ciencia e Innovación PGC2018-101743-B-I00 Ministerio de Economía y Competitividad SEV-2017-0706 Ministerio de Economía y Competitividad RYC-2015-18124
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Prepublicació ; recerca ; Versió de l'autor
Related work:	Florez, O. ; Arregui, G.; Albrechtsen, M. ; Ng, R. C. ; Gomis-Bresco, J. ; Stobbe, S. ; Sotomayor Torres, C. M. and García, P. D. «Engineering nanoscale hypersonic phonon transport». Nature nanotechnology, vol. 17, issue 9 (Sep. 2022), p. 947-951 https://doi.org/10.1038/s41565-022-01178-1

DOI: 10.48550/arXiv.2202.02166

12 p, 12.8 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Research literature > Preprints