Coupling between crystal field transitions and phonons in the 4f-electron system CeCu2.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F03%3A49033096" target="_blank" >RIV/61389005:_____/03:49033096 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Coupling between crystal field transitions and phonons in the 4f-electron system CeCu2.
Original language description
In general, elementary excitations like phonons and crystal field (CF) transitions are considered decoupled and the determination and interpretation of the measured spectra of both phenomena, i.e. the phonon dispersion relations and the CF level schemesare made independently of each other. A signature of a strong coupling between both phenomena is the observation of an unusual behaviour in both subsystems. In this paper, we present inelastic neutron scattering results on the rare earth compound CeCu2.This substance shows a orthorhombic CeCu2 structure with 18 phonon modes and a splitting of the J = 5/2 ground state multiplet of the Ce3+ ions into 3 doublets. The assumption of a coupling between a CF transition connecting the two excited CF states andphonons was put forward from the results of inelastic neutron data on a polycrystalline sample. This assumption is now confirmed by inelastic neutron spectra on a single crystal showing unusual phonon energy shifts and line widths as wel
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BG - Nuclear, atomic and molecular physics, accelerators
OECD FORD branch
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Project
<a href="/en/project/KSK1048102" target="_blank" >KSK1048102: Fundamental physical laws of microworld and macroworld, the behaviour of matter and radiation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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