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Science 20 February 1998:
Vol. 279. no. 5354, pp. 1196 - 1198
DOI: 10.1126/science.279.5354.1196
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Reports

c-Axis Electrodynamics as Evidence for the Interlayer Theory of High-Temperature Superconductivity

Philip W. Anderson

In the interlayer theory of high-temperature superconductivity, the interlayer pair tunneling energy (similar to the Josephson or Lawrence-Doniach energy) is the motivation for superconductivity. This connection requires two experimentally verifiable identities: the coherent normal-state conductance must be smaller than the "Josephson" coupling energy, and the Josephson coupling energy must be equal to the condensation energy of the superconductor. The first condition is well satisfied in the only case that is relevant, (La,Sr)2CuO4, but the second condition has been questioned. It is satisfied for all dopings in (La,Sr)2CuO4 and also in optimally doped Hg(Ba)2CuO5, which was measured recently, but seems to be strongly violated in measurements on single crystals of Tl2Ba2CuO6.

Joseph Henry Laboratories of Physics, Princeton University, Princeton, NJ 08544, USA.

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Superconductivity-Induced Transfer of In-Plane Spectral Weight in Bi2Sr2CaCu2O8+delta.
H. J. A. Molegraaf, C. Presura, D. van der Marel, P. H. Kes, and M. Li (2002)
Science 295, 2239-2241
   Abstract »    Full Text »    PDF »
Superconductivity and the c Axis Spectral Weight of High-Tc Superconductors.
L. B. Ioffe and A. J. Millis (1999)
Science 285, 1241-1244
   Abstract »    Full Text »
Images of Interlayer Josephson Vortices in Tl2Ba2CuO6+{delta}.
K. A. Moler, J. R. Kirtley, D. G. Hinks, T. W. Li, and M. Xu (1998)
Science 279, 1193-1196
   Abstract »    Full Text »    PDF »


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