Fractional power-law conductivity in SrRuO₃ and its consequences
Dodge, J. S. · Weber, C. P. · Corson, J. · Orenstein, J. · Schlesinger, Z. · Reiner, J. W. · Beasley, M. R.
Original · EN
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.
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