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

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

2005-10-25

arxiv.org/abs/cond-mat/0510649v2

Phys. Rev. B 73, 064507 (2006)

Physics

Condensed Matter

Superconductivity

7 pages, 4 figures

Scientific paper

10.1103/PhysRevB.73.099904

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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