Journal
PHYSICAL REVIEW B
Volume 73, Issue 6, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevB.73.064507
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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 with a frequency-independent scattering that undergoes a sharp decrease as the temperature is lowered below T-c. This phenomenology has been suggested by other experiments, particularly microwave conductivity. We find that such a decrease accounts for the observed decrease in kinetic energy; a study of these different phenomena over a wide range of high T-c materials would confirm this correlation.
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