Frustrated Kinetic Energy, the Optical Sum Rule, and the Mechanism of Superconductivity
- 15 March 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 82 (11) , 2366-2369
- https://doi.org/10.1103/physrevlett.82.2366
Abstract
The basis of the interlayer tunneling theory of high-temperature superconductivity is that the electronic kinetic energy in a direction perpendicular to the copper-oxygen planes is a substantial fraction of the condensation energy. This issue is critically examined, and it is argued from a rigorous conductivity sum rule that the consequences of this theory are consistent with recent optical and penetration depth measurements.Keywords
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