Abstract
The optical properties of the heavy fermion family (, Rh, Ir) have been determined in the photon energy range from 2 meV to 4.5 eV using the combination of near normal incidence reflectivity (2 meV–0.8 eV) and ellipsometry (0.8–4.5 eV). In all compounds signatures of the formation of a coherent state are found. However, as a result of the competition with antiferromagnetism, the energy region where the coherent state occurs is much lower in the compound that orders magnetically.
- Received 12 January 2005
DOI:https://doi.org/10.1103/PhysRevB.72.045119
©2005 American Physical Society