Sum rule anomaly from suppression of inelastic scattering in the superconducting state

F. Marsiglio

doi:10.1103/PhysRevB.73.064507

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Sum rule anomaly from suppression of inelastic scattering in the superconducting state

F. Marsiglio

DOI 10.1103/PhysRevB.73.064507 · Physical Review B

T1

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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 with a frequency-independent scattering that 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 decrease in kinetic energy; a study of these different phenomena over a wide range of high Tc materials would confirm this correlation.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2212 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBCO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown