Localized4fStates and Dynamic Jahn-Teller Effect inPrO2

Autor:	P. Santini, Robert Bewley, R. S. Eccleston, C.H. Gardiner, B.D. Rainford, S.J.S. Lister, Andrew T. Boothroyd, L.D. Noailles, D.B. Currie
Rok vydání:	2001
Předmět:	Physics symbols.namesake Scattering Jahn–Teller effect symbols General Physics and Astronomy Neutron Cubic crystal system Atomic physics Hamiltonian (quantum mechanics) Ground state Ion
Zdroj:	Physical Review Letters. 86:2082-2085
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.86.2082
Popis:	Neutron spectroscopic measurements of the magnetic excitations in PrO2 reveal (1) sharp peaks characteristic of transitions between levels of the 4f(1) configuration of Pr4+ split by the cubic crystal field, and (2) broad bands of scattering centered near 30 and 160 meV. We present a simple model based on a vibronic Hamiltonian that accounts for these contrasting features of the data. The analysis shows that 90% +/- 10% of the Pr ions have a localized 4f(1) configuration and provides strong evidence for a dynamic Jahn-Teller effect in the Gamma (8) electronic ground state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57a1643c19ec23012f1c0c24e1a88bb4 https://doi.org/10.1103/physrevlett.86.2082 Zobrazit plný text záznamu