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APS » Journals » Phys. Rev. Lett. » Volume 85 » Issue 23
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Phys. Rev. Lett. 85, 4932–4935 (2000)

Low-Frequency Crossover of the Fractional Power-Law Conductivity in SrRuO3

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J. S. Dodge1,2,*, C. P. Weber1,2, J. Corson1,2, J. Orenstein1,2, Z. Schlesinger3, J. W. Reiner4, and M. R. Beasley4
1Department of Physics, University of California at Berkeley, Berkeley, California 94720
2Materials Sciences Division, E. O. Lawrence Berkeley National Laboratory, Berkeley, California 94720
3Department of Physics, University of California at Santa Cruz, Santa Cruz, California 95064
4Edward L. Ginzton Laboratories, Stanford University, Stanford, California 94305

Received 19 June 2000; published in the issue dated 4 December 2000

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.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.4932
DOI:
10.1103/PhysRevLett.85.4932
PACS:
72.15.Qm, 74.20.Mn, 75.20.En, 78.66.Bz

*Present address: Physics Department, Simon Fraser University, Burnaby, Canada V5A 1S6. Email address: jsdodge@sfu.ca

 
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