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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

<a href="/cs/project/KSK1048102" target="_blank" >KSK1048102: Základní fyzikální zákony mikrosvěta a makrosvěta, chování hmoty a záření</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2003

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PHYSICA. B-CONDENSED MATTER

ISSN

0921-4526

e-ISSN

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Svazek periodika

335

Číslo periodika v rámci svazku

1, 2, 3, 4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

41-43

Kód UT WoS článku

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EID výsledku v databázi Scopus

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