Fizika Nizkikh Temperatur: Volume 43, Number 9 (September 2017), p. 1396-1399    ( to contents , go back )

The diffusing of the superconducting transition in the Y–Ba–Cu–O single crystal

G.Ya. Khadzhai, С.R. Vovk, and R.V. Vovk

V.N. Karazin Kharkiv National University, 4 Svobody Sq., Kharkiv 61022, Ukraine
E-mail: Ruslan.V.Vovk@univer.kharkov.ua

Received January 25, 2017, revised February 21, 2017

Abstract

It is shown that in HTSC the transition to the superconducting state can be described in terms of the phenomenological theory of diffuse phase transitions due to the heterogeneity of the material structure. The paraconductivity caused by the fluctuation Cooper pairs above Tc shows 2D–3D crossover which also takes place in a certain temperature range located above the superconducting transition interval.

PACS: 74.72.–h Cuprate superconductors.

Key words: HTSC, Cooper pairs, heterogeneity.

Published online:: July 25, 2017

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