Journal
SOLID STATE COMMUNICATIONS
Volume 124, Issue 4, Pages 119-124Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0038-1098(02)00486-6
Keywords
optical conductivity; superconductors; electron phonon interaction
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The interrelation between the condensation energy and the optical sum rules have been investigated. It has been shown that the so called 'partial' sum rule violation is related mainly to a temperature dependence of the relaxation rate rather than to the appearance of superconductivity itself. Moreover, we demonstrate that the experimental data on the temperature dependence of the optical sum rule can be explained rather well by accounting for the strong electron-phonon interaction. (C) 2002 Published by Elsevier Science Ltd.
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