Low-frequency crossover of the fractional power-law conductivity in SrRuO3

Authors
Dodge, JS Weber, CP Corson, J Orenstein, J Schlesinger, Z Reiner, JW Beasley, MR
Citation
Js. Dodge et al., Low-frequency crossover of the fractional power-law conductivity in SrRuO3, PHYS REV L, 85(23), 2000, pp. 4932-4935
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
85
Issue
23
Year of publication
2000
Pages
4932 - 4935
Database
ISI
SICI code
0031-9007(200012)85:23<4932:LCOTFP>2.0.ZU;2-H
Abstract
We combine the results of terahertz time-domain spectroscopy with far-infra red transmission and reflectivity to obtain the conductivity of SrRuO3 over an unprecedented continuous range in frequency, allowing us to characteriz e 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 theor y of metals.