Abstract
Raman-scattering measurements have been carried out to study magnetic properties of the quaternary magnetic superconductor The crystal field (CF) of splits the 16-fold degenerate ground-state multiplet of electrons into eight Kramers doublets within the site symmetry. Therefore, one expects seven ground-state CF transitions from the lowest state to the higher states. Excitation symmetries and transition characteristics between these levels can be identified systematically by a proper use of the Raman polarization selection rules. As a result, temperature-dependent and polarized Raman-scattering spectra reveal six ground-state CF transitions: and Using the CF transition characteristics of the obtained data, we expect that one unobserved CF level transition lies between and
- Received 3 December 2003
DOI:https://doi.org/10.1103/PhysRevB.69.144420
©2004 American Physical Society