Comment on "Magnetoelastic model for the relaxation of lanthanide ions in YBa2Cu3O7-d observed by neutron scattering"
(2001)
Localized 4f states and dynamic Jahn-Teller effect in PrO2.
Phys Rev Lett 86:10 (2001) 2082-2085
Abstract:
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.Comment on "Magnetoelastic model for the relaxation of lanthanide ions in YBa2Cu3O7-δ observed by neutron scattering" -: art. no. 066501
PHYSICAL REVIEW B 64:6 (2001) ARTN 066501
Magnetic Excitations in YbNi2B2C
Rare Earth Transition Metal Borocarbides (Nitrides): Superconducting, Magnetic and Normal State Properties Kluwer Academic Press (2001) 163-169