0431292 - FZÚ 2015 RIV US eng J - Journal Article
Kempa, Martin - Ondrejkovič, Petr - Bourges, P. - Márton, Pavel - Hlinka, Jiří
Lattice dynamics of NaI studied by inelastic neutron scattering: absence of thermally induced discrete breathers.
Physical Review. B. Roč. 89, č. 5 (2014), "054308-1"-"054308-5". ISSN 1098-0121. E-ISSN 2469-9969
R&D Projects: GA ČR GPP204/11/P404
Institutional support: RVO:68378271
Keywords : NaI * alkali halides * inelastic neutron scattering * discrete breathers
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.736, year: 2014

The paper presents an inelastic neutron scattering study of lattice dynamics of the NaI alkali halide crystal, aimed to check the previously reported signatures of intrinsic localized modes (discrete breathers). It is shown that three unusual spectral features, previously interpreted as an evidence for thermally induced discrete breathers, are all absent in the independent experiments reported here.
Permanent Link: http://hdl.handle.net/11104/0235876