Universality of transition temperatures in families of copper-oxide superconductors: interlayer tunneling redux

Details Universality of transition temperatures in families of copper-oxide superconductors: interlayer tunneling redux Universality of transition temperatures in families of copper-oxide superconductors: interlayer tunneling redux

2005-07-25

arxiv.org/abs/cond-mat/0507574v3

Proc. SPIE, Vol. 5932, 593219 (2005)

Physics

Condensed Matter

Superconductivity

14 pages, 9 figures. Missing axes labels corrected

Scientific paper

10.1117/12.623139

We revisit the interlayer tunneling theory of high temperature superconductors and formulate it as a mechanism by which the striking systematics of the transition temperature within a given homologous series can be understood. We pay attention not only to the enhancement of pairing, as was originally suggested, but also to the role of competing order parameters that tend to suppress superconductivity, and to the charge imbalance between inequivalent outer and inner CuO2 planes in a unit cell. Calculations based on a generalized Ginzburg-Landau theory yield results that bear robust and remarkable resemblance to experimental observations.

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