Energy gap in the high-Tc superconductor La1.85Sr0.15CuO4

U. Walter; M. S. Sherwin; A. Stacy; P. L. Richards; A. Zettl

doi:10.1103/PhysRevB.35.5327

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Energy gap in the high-Tc superconductor La1.85Sr0.15CuO4

U. Walter, M. S. Sherwin, A. Stacy, P. L. Richards, A. Zettl

DOI 10.1103/PhysRevB.35.5327 · Physical Review B

T1

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Abstract

The far-infrared (FIR) reflectance of the high-Tc superconductor La1.85Sr0.15CuO4 has been measured in the frequency range 15 to 400 cm−1. Below the superconducting onset temperature T=36 K, absorption features in the FIR spectrum indicate an energy gap with a functional form similar to the BCS gap, but with a smaller magnitude.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	36	Pressure unresolved	onset
La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	37	Pressure unresolved	onset
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	37	Pressure unresolved	onset