Low Temperature Physics: 44, 81 (2018); https://doi.org/10.1063/1.5020905
Fizika Nizkikh Temperatur: Volume 44, Number 2 (February 2018), p. 111-153    ( to contents , go back )

Electric transport and pseudogap in high-temperature superconducting compounds of system 1-2-3 under conditions of all-round compression

R.V. Vovk

V. Karazin Kharkov National University, 4 Svobody Sq., Kharkov 61107, Ukraine

A.L. Solovjov

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
E-mail: solovjov@ilt.kharkov.uа

Received June 8, 2017, revised Jule 6, 2017

Abstract

The problem of the influence of high pressure on various mechanisms of electric transport of HTSC compounds REBa2Cu3O7–δ (RE = Y or other rare-earth ion) is considered. The features of the crystal structure and the effect of structural defects of different morphologies on the electrical conductivity of these compounds in the normal, pseudogap, and superconducting state are discussed. A review of the experimental data obtained in studies of the effect of high hydrostatic pressure on various mechanisms of electric transport of REBa2Cu3O7–δ compounds of different composition and technological background is performed. Various theoretical models devoted to the effect of high pressure on the electrical conductivity of HTSC compounds of the 1-2-3 system are discussed.

PACS: 74.25.F– Transport properties;
PACS: 74.62.Dh Effects of crystal defects, doping and substitution;
PACS: 74.72.Kf Pseudogap regime.

Key words: pseudogap, cuprate HTSC, hydrostatic pressure.

Published online: December 25, 2017

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