Impact Proofs for the Work-Hardening Nature of Low- and High-TC Supercon- Ductivity. Possible Forecast of the Parameters of Superconductors Through the All-Range Temperature Tests

Details Impact Proofs for the Work-Hardening Nature of Low- and High-TC Supercon- Ductivity. Possible Forecast of the Parameters of Superconductors Through the All-Range Temperature Tests Impact Proofs for the Work-Hardening Nature of Low- and High-TC Supercon- Ductivity. Possible Forecast of the Parameters of Superconductors Through the All-Range Temperature Tests

2000-09-16

arxiv.org/abs/cond-mat/0009246v1

Physics

Condensed Matter

Superconductivity

12 pages

Scientific paper

The remarkable finding of this work is the linear correlation between the critical temperature of superconducting (SC) transition, Tc, and the room-temperature half-width of angular correlation of positron annihila- tion phonons (ACPAP), Go/2, in the series of powder samples of high-Tc YBCO(123) ceramic superconductors (SCs) with various deficiency of oxygen content. This correlation points to the existence of fundamental physical parameter of materials in all-temperature range,which is the crucial one for their insulator-metal-superconductor (IMSC) transition. We attribute this key-parameter to the rapid increase and then the steady (due to the minimal mechanical relaxation rate) lattice compressive deformation - the sudden and stable jump in work-hardening of crystals). The traces of this compression may be observed by different methods over a wide range of te- mperatures and used for the forecast of the parameters of technological interest for the new SCs.

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