ON FORMATION OF 2 SUPERCONDUCTING PHASES WITH VARYING OXYGEN NONSTOICHIOMETRY IN Y-BA CUPRATES

Citation
Ap. Saiko et Ve. Gusakov, ON FORMATION OF 2 SUPERCONDUCTING PHASES WITH VARYING OXYGEN NONSTOICHIOMETRY IN Y-BA CUPRATES, Fizika nizkih temperatur, 21(8), 1995, pp. 821-824
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
ISSN journal
01326414
Volume
21
Issue
8
Year of publication
1995
Pages
821 - 824
Database
ISI
SICI code
0132-6414(1995)21:8<821:OFO2SP>2.0.ZU;2-#
Abstract
The existence of two superconducting phases in YBa2Cu3O7-delta is show n to be due to the alternating (on variation in delta) dominant contri bution to the BCS pairing from two branches of the effective oscillati on frequency of apical atoms O(4) that form a bistable sublattice. Con centration ranges of the existence of the above phases are estimated b y using the percolation theory.