Abstract
Optical conductivity spectra of paramagnetic are investigated at various temperatures. At it shows a non-Fermi-liquid behavior of similar to the case of a ferromagnet As the temperature (T) is increased, on the other hand, in the low-frequency region is progressively suppressed, deviating from the dependence. Interestingly, the suppression of is found to scale with at all temperatures. The origin of the scaling behavior coupled with the non-Fermi-liquid behavior is discussed.
- Received 23 April 2002
DOI:https://doi.org/10.1103/PhysRevB.66.041104
©2002 American Physical Society