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Coherent phonons in Si/ SiGe superlattices

hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorEZZAHRI, Younès
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorGRAUBY, Stéphane
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorRAMPNOUX, Jean-Michel
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorMICHEL, Hélène
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorPERNOT, Gilles
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorCLAEYS, W.
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorDILHAIRE, Stefan
hal.structure.identifierLaboratoire de Mécanique Physique [LMP]
dc.contributor.authorROSSIGNOL, Clément
hal.structure.identifierUniversity of California [Santa Cruz] [UC Santa Cruz]
dc.contributor.authorZENG, G.
hal.structure.identifierUniversity of California [Santa Cruz] [UC Santa Cruz]
dc.contributor.authorSHAKOURI, Ali
dc.date.created2007-02-26
dc.date.issued2007
dc.identifier.issn1098-0121
dc.description.abstractEnThere are several classes of coherent phonons whose generation mechanisms are completely different: impulsive stimulated Raman scattering, Brillouin oscillations, and coherent longitudinal-acoustic-phonon Bragg reflection. All of these are investigated in Si/ SiGe superlattices using a picosecond ultrasonics technique at room temperature. Bragg reflection for a single vibrational mode is related to gaps in the phonon-dispersion relation at the center and the boundary of the folded Brillouin zone. The two lowest minigaps are observed at 283 and 527 GHz. Theoretical calculations of phonon-dispersion relation and phonon reflection rate are given to explain experimental results.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enCoherent phonons in Si/ SiGe superlattices
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.75.195309
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
dc.subject.halSciences de l'ingénieur [physics]/Acoustique [physics.class-ph]
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page195309
bordeaux.volume75
bordeaux.issue19
bordeaux.peerReviewedoui
hal.identifierhal-01535961
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01535961v1
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