General model of pressure-induced transition temperature increase with focus on the Hg-Ba-Ca-Cu-O System

Details General model of pressure-induced transition temperature increase with focus on the Hg-Ba-Ca-Cu-O System General model of pressure-induced transition temperature increase with focus on the Hg-Ba-Ca-Cu-O System

2001-04-03

arxiv.org/abs/cond-mat/0104050v1

Chem.Phys.Lett. 218 (1994) 437-440

Physics

Condensed Matter

Superconductivity

9 pages, 1 table, 0 figures

Scientific paper

A general calculation of high pressure induced transition temperature (T c) increases for oxide superconductors gives a good description for the Hg-Ba-Ca-Cu-O system. Predictions are made of the maximum T^ cP theo =163, 154, and 111K compared with T^ cP exp = 164, 154, and 118K respectively for the superconducting phases of Hg-1223, Hg-1212, and Hg-1201 as a function of their compressibilities agreeing with experiment. The theoretical result is in the form of a universal scaling equation for the fractional change in T c as a function of pressure, which is derived from a recent phenomenological theory of short coherence length superconductivity.

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