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Sum Rule Anomaly from Suppression of Inelastic Scattering in the Superconducting State

Frank Marsiglio
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Abstract

In the conventional BCS description of a superconductor the kinetic energy increases in the superconducting state. We describe the observed decrease in kinetic energy by adopting a simple model of electrons whose elastic scattering rate undergoes a sharp decrease as the temperature is lowered below Tc. This phenomenology has been suggested by other experiments, particularly microwave conductivity. We find that such a decrease accounts for the observed increase; a study of these different phenomena over a wide range of high Tc materials would confirm this correlation.

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Frank Marsiglio. 2005-10-27. Sum Rule Anomaly from Suppression of Inelastic Scattering in the Superconducting State. https://doi.org/10.1103/physrevb.73.099904

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