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

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dc.contributor.author Liu, Y.
dc.contributor.author Frenkel, A.
dc.contributor.author Garrett, G. A.
dc.contributor.author Fahy, Stephen B.
dc.contributor.author Uher, C.
dc.contributor.author Merlin, Roberto
dc.contributor.author Whitaker, J. F.
dc.date.accessioned 2017-09-08T09:15:50Z
dc.date.available 2017-09-08T09:15:50Z
dc.date.issued 1995
dc.identifier.citation Liu, 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.75.334 en
dc.identifier.volume 75
dc.identifier.issued 2
dc.identifier.startpage 334
dc.identifier.endpage 337
dc.identifier.issn 0031-9007
dc.identifier.uri http://hdl.handle.net/10468/4662
dc.identifier.doi 10.1103/PhysRevLett.75.334
dc.description.abstract Pump-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.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.relation.uri https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.75.334
dc.rights © 1995, American Physical Society en
dc.subject Soft mode en
dc.subject Transition en
dc.subject Dynamics en
dc.subject Domain en
dc.title Impulsive light-scattering by coherent phonons in LaAlO3: Disorder and boundary effects en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Stephen Fahy, Physics, University College Cork, Cork, Ireland. +353-21-490-3000. Email: S.Fahy@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:A1995RG97800038
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review Letters en
dc.internal.IRISemailaddress s.fahy@ucc.ie en


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