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Search for light-induced intrinsic localized modes: negative result
- 1.0387004 - FZÚ 2013 RIV GB eng J - Journal Article
Kempa, Martin - Ondrejkovič, Petr - Ollivier, J. - Rols, S. - Kulda, J. - Margueron, S. - Fernandez, M. - Hlinka, Jiří
Search for light-induced intrinsic localized modes: negative result.
Ferroelectrics. Roč. 440, č. 1 (2012), 42-46. ISSN 0015-0193. E-ISSN 1563-5112
R&D Projects: GA ČR GPP204/11/P404
Institutional research plan: CEZ:AV0Z10100520
Keywords : alkali halides * intrinsic localized modes * phonon density of states * inelastic neutron scattering
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.415, year: 2012
We have attempted to induce the theoretically predicted anharmonic lattice modes called intrinsic localized modes in the NaI single crystal lattice by UV excitation of the impurity electronic states of Tl+ substitution centers. Comparison of low-temperature phonon density of states measured by inelastic neutron scattering with and without simultaneous UV illumination of the sample did not reveal significant difference. Results are discussed in the context of possible improvements of the proposed experiment.
Permanent Link: http://hdl.handle.net/11104/0216211
Number of the records: 1