Optical probing of ultrafast electronic decay in Bi and Sb with slow phonons

dc.contributor.authorLi, J. J.
dc.contributor.authorChen, J.
dc.contributor.authorReis, David A.
dc.contributor.authorFahy, Stephen B.
dc.contributor.authorMerlin, Roberto
dc.contributor.funderScience Foundation Ireland
dc.contributor.funderBritish Ecological Society
dc.contributor.funderU.S. Department of Energy
dc.contributor.funderAir Force Office of Scientific Research
dc.date.accessioned2017-09-04T09:02:30Z
dc.date.available2017-09-04T09:02:30Z
dc.date.issued2013
dc.description.abstractIllumination with laser sources leads to the creation of excited electronic states of particular symmetries, which can drive isosymmetric vibrations. Here, we use a combination of ultrafast stimulated and cw spontaneous Raman scattering to determine the lifetime of A(1g) and E-g electronic coherences in Bi and Sb. Our results both shed new light on the mechanisms of coherent phonon generation and represent a novel way to probe extremely fast electron decoherence rates. The E-g state, resulting from an unequal distribution of carriers in three equivalent band regions, is extremely short lived. Consistent with theory, the lifetime of its associated driving force reaches values as small as 2 (6) fs for Bi (Sb) at 300 K. DOI: 10.1103/PhysRevLett.110.047401en
dc.description.sponsorshipAir Force Office of Scientific Research (MURI program)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.articleid47401
dc.identifier.citationLi, J. J., Chen, J., Reis, D. A., Fahy, S. and Merlin, R. (2013) 'Optical probing of ultrafast electronic decay in Bi and Sb with slow phonons', Physical Review Letters, 110(4), 047401 (5pp). doi: 10.1103/PhysRevLett.110.047401en
dc.identifier.doi10.1103/PhysRevLett.110.047401
dc.identifier.issn0031-9007
dc.identifier.issued4
dc.identifier.journaltitlePhysical Review Lettersen
dc.identifier.urihttps://hdl.handle.net/10468/4620
dc.identifier.volume110
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.047401
dc.rights© 2013, American Physical Societyen
dc.subjectCoherent thz phononsen
dc.subjectDisplacive excitationen
dc.subjectLight-pulsesen
dc.subjectMechanismen
dc.subjectBismuthen
dc.titleOptical probing of ultrafast electronic decay in Bi and Sb with slow phononsen
dc.typeArticle (peer-reviewed)en
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