Optical probing of ultrafast electronic decay in Bi and Sb with slow phonons
dc.contributor.author | Li, J. J. | |
dc.contributor.author | Chen, J. | |
dc.contributor.author | Reis, David A. | |
dc.contributor.author | Fahy, Stephen B. | |
dc.contributor.author | Merlin, Roberto | |
dc.contributor.funder | Science Foundation Ireland | |
dc.contributor.funder | British Ecological Society | |
dc.contributor.funder | U.S. Department of Energy | |
dc.contributor.funder | Air Force Office of Scientific Research | |
dc.date.accessioned | 2017-09-04T09:02:30Z | |
dc.date.available | 2017-09-04T09:02:30Z | |
dc.date.issued | 2013 | |
dc.description.abstract | Illumination 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.110.047401 | en |
dc.description.sponsorship | Air Force Office of Scientific Research (MURI program) | en |
dc.description.status | Peer reviewed | en |
dc.description.version | Published Version | en |
dc.format.mimetype | application/pdf | en |
dc.identifier.articleid | 47401 | |
dc.identifier.citation | Li, 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.110.047401 | en |
dc.identifier.doi | 10.1103/PhysRevLett.110.047401 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.issued | 4 | |
dc.identifier.journaltitle | Physical Review Letters | en |
dc.identifier.uri | https://hdl.handle.net/10468/4620 | |
dc.identifier.volume | 110 | |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.uri | https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.047401 | |
dc.rights | © 2013, American Physical Society | en |
dc.subject | Coherent thz phonons | en |
dc.subject | Displacive excitation | en |
dc.subject | Light-pulses | en |
dc.subject | Mechanism | en |
dc.subject | Bismuth | en |
dc.title | Optical probing of ultrafast electronic decay in Bi and Sb with slow phonons | en |
dc.type | Article (peer-reviewed) | en |
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