Electrodynamic response of Y1Ba2Cu3Oy and La1.85Sr0.15CuO4−δ in the superconducting state

S. Sridhar; C. A. Shiffman; H. Hamdeh

doi:10.1103/PhysRevB.36.2301

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Electrodynamic response of Y1Ba2Cu3Oy and La1.85Sr0.15CuO4−δ in the superconducting state

S. Sridhar, C. A. Shiffman, H. Hamdeh

DOI 10.1103/PhysRevB.36.2301 · Physical Review B

T1

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Abstract

Measurements of the temperature dependence of the surface resistance Rs at 9.85 GHz and the screening length δs at 1 MHz for the superconducting states of Y1Ba2Cu3Oy and La1.85Sr0.15CuO4 show strong correlations, suggesting that the superconducting state is the same in the two materials. While the overall temperature dependence of Rs is reasonably well described by the Bardeen-Cooper-Schrieffer (BCS) theory in the very dirty limit, additional features are seen in Rs and also in δs which suggest detailed deviations from the BCS s-wave state.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Y1Ba2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	94	Pressure not reported	onset
Y1Ba2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	92.5	Pressure not reported	zero_resistance
La1.85Sr0.15CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	42	Pressure not reported	onset
Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.78	Pressure not reported	unknown