Impulsive light-scattering by coherent phonons in LaAlO3: Disorder and boundary effects

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dc.contributor.authorLiu, Y.
dc.contributor.authorFrenkel, A.
dc.contributor.authorGarrett, G. A.
dc.contributor.authorFahy, Stephen B.
dc.contributor.authorUher, C.
dc.contributor.authorMerlin, Roberto
dc.contributor.authorWhitaker, J. F.
dc.date.accessioned2017-09-08T09:15:50Z
dc.date.available2017-09-08T09:15:50Z
dc.date.issued1995
dc.description.abstractPump-probe measurements of coherent-phonon-induced changes of refractive index in LaAlO3 are dominated by normally weak boundary effects. Atomic displacements in the range 50–500 μÅ were generated and probed by femtosecond laser pulses through impulsive Raman scattering. The absence of a bulk contribution is ascribed to phase mismatch due to domain disorder. Selection rules are consistent with a Raman model considering reflection and transmission at interfaces. Intensities and phonon parameters as a function of temperature agree well with incoherent Raman data.en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLiu, Y., Frenkel, A., Garrett, G. A., Whitaker, J. F., Fahy, S., Uher, C. and Merlin, R. (1995) ' Impulsive light-scattering by coherent phonons in LaAlO3: Disorder and boundary effects', Physical Review Letters, 75(2), 334-337 (4pp). doi: 10.1103/PhysRevLett.75.334en
dc.identifier.doi10.1103/PhysRevLett.75.334
dc.identifier.endpage337
dc.identifier.issn0031-9007
dc.identifier.issued2
dc.identifier.journaltitlePhysical Review Lettersen
dc.identifier.startpage334
dc.identifier.urihttps://hdl.handle.net/10468/4662
dc.identifier.volume75
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.75.334
dc.rights© 1995, American Physical Societyen
dc.subjectSoft modeen
dc.subjectTransitionen
dc.subjectDynamicsen
dc.subjectDomainen
dc.titleImpulsive light-scattering by coherent phonons in LaAlO3: Disorder and boundary effectsen
dc.typeArticle (peer-reviewed)en
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