摘要 : We present novel infrared optical conductivity data on the three layer high T-c superconductor Bi2Sr2Ca2CU3O10 at optimal doping. We extend the analysis of an earlier publication, providing a universal scaling function sigma(omega... 展开 We present novel infrared optical conductivity data on the three layer high T-c superconductor Bi2Sr2Ca2CU3O10 at optimal doping. We extend the analysis of an earlier publication, providing a universal scaling function sigma(omega, T) = T(-1)g(omega/T) for the optical conductivity. In the present manuscript, we obtain a good scaling collapse of the experimental curves on the g(omega/T) over a wide range of values of omega/T (at least in range 0-10), if we assume that g(omega/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 T-2 temperature dependent correction. The most striking property of g(omega/T) is, that it corresponds to a scattering rate which varies linearly as a function of temperature, but which is independent of the frequency. (c) 2006 Elsevier Inc. All rights reserved. 收起