Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes

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CUFFE, John, Oliver RISTOW, Emigdio CHÁVEZ, Andrey SHCHEPETOV, Pierre-Olivier CHAPUIS, Francesc ALZINA, Mike HETTICH, Jouni AHOPELTO, Thomas DEKORSY, Mika PRUNNILA, Clivia M. SOTOMAYOR TORRES, 2013. Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes. In: Physical Review Letters. 110(9). ISSN 0031-9007. eISSN 1079-7114

@article{Cuffe2013Lifet-24713, title={Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes}, year={2013}, doi={10.1103/PhysRevLett.110.095503}, number={9}, volume={110}, issn={0031-9007}, journal={Physical Review Letters}, author={Cuffe, John and Ristow, Oliver and Chávez, Emigdio and Shchepetov, Andrey and Chapuis, Pierre-Olivier and Alzina, Francesc and Hettich, Mike and Ahopelto, Jouni and Dekorsy, Thomas and Prunnila, Mika and Sotomayor Torres, Clivia M.} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/24713"> <dc:creator>Hettich, Mike</dc:creator> <dc:creator>Chapuis, Pierre-Olivier</dc:creator> <dc:rights>deposit-license</dc:rights> <dc:language>eng</dc:language> <dc:contributor>Ristow, Oliver</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-10-15T08:08:23Z</dc:date> <dc:creator>Ristow, Oliver</dc:creator> <dcterms:issued>2013</dcterms:issued> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/24713"/> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-10-15T08:08:23Z</dcterms:available> <dc:creator>Chávez, Emigdio</dc:creator> <dc:contributor>Hettich, Mike</dc:contributor> <dc:contributor>Alzina, Francesc</dc:contributor> <dc:contributor>Chapuis, Pierre-Olivier</dc:contributor> <dc:contributor>Cuffe, John</dc:contributor> <dc:creator>Dekorsy, Thomas</dc:creator> <dcterms:rights rdf:resource="http://nbn-resolving.org/urn:nbn:de:bsz:352-20140905103605204-4002607-1"/> <dc:creator>Ahopelto, Jouni</dc:creator> <dc:contributor>Chávez, Emigdio</dc:contributor> <dcterms:abstract xml:lang="eng">We study the relaxation of coherent acoustic phonon modes with frequencies up to 500 GHz in ultrathin free-standing silicon membranes. Using an ultrafast pump-probe technique of asynchronous optical sampling, we observe that the decay time of the first-order dilatational mode decreases significantly from ∼4.7  ns to 5 ps with decreasing membrane thickness from ∼194 to 8 nm. The experimental results are compared with theories considering both intrinsic phonon-phonon interactions and extrinsic surface roughness scattering including a wavelength-dependent specularity. Our results provide insight to understand some of the limits of nanomechanical resonators and thermal transport in nanostructures.</dcterms:abstract> <dc:contributor>Prunnila, Mika</dc:contributor> <dc:contributor>Shchepetov, Andrey</dc:contributor> <dc:creator>Shchepetov, Andrey</dc:creator> <dcterms:bibliographicCitation>Physical Review Letters ; 110 (2013), 9. - 095503</dcterms:bibliographicCitation> <dc:contributor>Ahopelto, Jouni</dc:contributor> <dc:creator>Prunnila, Mika</dc:creator> <dcterms:title>Lifetimes of Confined Acoustic Phonons in Ultrathin Silicon Membranes</dcterms:title> <dc:contributor>Dekorsy, Thomas</dc:contributor> <dc:creator>Alzina, Francesc</dc:creator> <dc:contributor>Sotomayor Torres, Clivia M.</dc:contributor> <dc:creator>Sotomayor Torres, Clivia M.</dc:creator> <dc:creator>Cuffe, John</dc:creator> </rdf:Description> </rdf:RDF>

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

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