Article ID Journal Published Year Pages File Type
1855457 Annals of Physics 2006 14 Pages PDF
Abstract

We present novel infrared optical conductivity data on the three layer high Tc superconductor Bi2Sr2Ca2Cu3O10 at optimal doping. We extend the analysis of an earlier publication, providing a universal scaling function σ (ω, T) = T−1g (ω/T) for the optical conductivity. In the present manuscript, we obtain a good scaling collapse of the experimental curves on the g (ω/T) over a wide range of values of ω/T (at least in range 0–10), if we assume that g (ω/T) is superimposed on a non-universal background which is temperature independent. We obtain the same result, if in our analysis we allow this background to have a T2 temperature dependent correction. The most striking property of g (ω/T) is, that it corresponds to a scattering rate which varies linearly as a function of temperature, but which is independent of the frequency.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Physics and Astronomy (General)
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