1.
Phys Rev Lett
; 85(23): 4932-5, 2000 Dec 04.
Article
in English
| MEDLINE
| ID: mdl-11102154
ABSTRACT
We combine the results of terahertz time-domain spectroscopy with far-infrared transmission and reflectivity to obtain the conductivity of SrRuO3 over an unprecedented continuous range in frequency, allowing us to characterize the approach to zero frequency as a function of temperature. We show that the conductivity follows a simple phenomenological form, with an analytic structure fundamentally different from that predicted by the standard theory of metals.