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Ultrafast study of phonon transport in isotopically controlled semiconductor nanostructures

Ultrafast study of phonon transport in isotopically controlled semiconductor nanostructures

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ISSENMANN, Daniel, Soizic EON, Hartmut BRACHT, Mike HETTICH, Thomas DEKORSY, Gernot BUTH, Ralph STEININGER, Tilo BAUMBACH, John LUNDSGAARD HANSEN, Arne NYLANDSTED LARSEN, Joel W. AGER, Eugene E. HALLER, Anton PLECH, 2016. Ultrafast study of phonon transport in isotopically controlled semiconductor nanostructures. In: Physica status solidi (a). 213(3), pp. 541-548. ISSN 0031-8965. eISSN 1521-396X

@article{Issenmann2016-03Ultra-32926, title={Ultrafast study of phonon transport in isotopically controlled semiconductor nanostructures}, year={2016}, doi={10.1002/pssa.201532462}, number={3}, volume={213}, issn={0031-8965}, journal={Physica status solidi (a)}, pages={541--548}, author={Issenmann, Daniel and Eon, Soizic and Bracht, Hartmut and Hettich, Mike and Dekorsy, Thomas and Buth, Gernot and Steininger, Ralph and Baumbach, Tilo and Lundsgaard Hansen, John and Nylandsted Larsen, Arne and Ager, Joel W. and Haller, Eugene E. and Plech, Anton} }

<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/123456789/32926"> <dc:creator>Issenmann, Daniel</dc:creator> <dc:creator>Dekorsy, Thomas</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-02-10T09:54:16Z</dcterms:available> <dc:contributor>Dekorsy, Thomas</dc:contributor> <dc:creator>Bracht, Hartmut</dc:creator> <dcterms:title>Ultrafast study of phonon transport in isotopically controlled semiconductor nanostructures</dcterms:title> <dc:contributor>Eon, Soizic</dc:contributor> <dc:creator>Haller, Eugene E.</dc:creator> <dc:creator>Lundsgaard Hansen, John</dc:creator> <dc:contributor>Nylandsted Larsen, Arne</dc:contributor> <dc:language>eng</dc:language> <dc:contributor>Hettich, Mike</dc:contributor> <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/32926"/> <dc:creator>Nylandsted Larsen, Arne</dc:creator> <dc:creator>Buth, Gernot</dc:creator> <dc:creator>Hettich, Mike</dc:creator> <dc:contributor>Issenmann, Daniel</dc:contributor> <dc:contributor>Bracht, Hartmut</dc:contributor> <dc:creator>Ager, Joel W.</dc:creator> <dc:contributor>Baumbach, Tilo</dc:contributor> <dc:contributor>Haller, Eugene E.</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2016-02-10T09:54:16Z</dc:date> <dc:creator>Plech, Anton</dc:creator> <dc:contributor>Plech, Anton</dc:contributor> <dc:contributor>Steininger, Ralph</dc:contributor> <dc:creator>Eon, Soizic</dc:creator> <dcterms:abstract xml:lang="eng">Isotopically modulated silicon and germanium multilayers are analyzed by means of femtosecond spectroscopy and pulsed X-ray scattering for determining thermal conductivity and phonon modes. Isotopic modulation decreases thermal conductivity stronger than expected from a band bending model in the coherent phonon transport regime, in particular for silicon. Femtosecond spectroscopy and X-ray scattering resolve zone-folded vibration modes, which are located at the edge of the new, smaller Brillouin zone due to the multilayer periodicity. These modes can contribute to the reduction of thermal conductivity by Umklapp processes within the zone-folded mini-bands. Color-coded increase in ultrafast X-ray scattering in vicinity to the mini-zone boundary of a germanium multilayer.</dcterms:abstract> <dcterms:issued>2016-03</dcterms:issued> <dc:creator>Steininger, Ralph</dc:creator> <dc:contributor>Lundsgaard Hansen, John</dc:contributor> <dc:contributor>Ager, Joel W.</dc:contributor> <dc:contributor>Buth, Gernot</dc:contributor> <dc:creator>Baumbach, Tilo</dc:creator> </rdf:Description> </rdf:RDF>

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