HAIT Journal of Science and Engineering
Volume 1, Issue 1, pp. 51-64
© 2004 Holon Academic Institute of Technology

 

Occurrence of non-Drude behavior in the infrared conductivity of ruthenates and cuprates

Smadar Shatz*, Lior Klein, and Nathan Wiser

Department of Physics, Bar-Ilan University,
Ramat-Gan 52900, Israel
*Corresponding author: shatz@mail.biu.ac.il
 Received 5 December 2003

 

The infrared conductivity s(w) of very-high-resistivity ruthenates and cuprates (in the normal state) was recently found to deviate from the usual Drude behavior - sDrude(w) ∞ w-2. We have included the Pippard ineffectiveness condition in the analysis of s(w), and obtained that for very-high-resistivity materials, s(w) ∞ w-a, with a << 2. Therefore, the Pippard condition might be a partial explanation for the non-Drude behavior observed for the infrared conductivity of the ruthenates and cuprates.


PACS: 72.10.-v, 72.30.+q, 74.72.-h

 

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