Interlayer Tunneling Mechanism for High-Tc Superconductivity: Comparison with c Axis Infrared Experiments

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Science  26 May 1995:
Vol. 268, Issue 5214, pp. 1154-1155
DOI: 10.1126/science.268.5214.1154


Recent c axis-polarized infrared measurements in the high-transition temperature (high-Tc) cuprate superconductor (La,Sr)2CuO4 can be interpreted on the basis that the entire condensation energy comes from the interlayer Josephson coupling. This gives a parameter-free determination of penetration depth λ and coherence length ξ for this superconductor that are in agreement with experiment.