The effect of ferroelastic deformations in the parent phase on the superconducting transition temperature of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}
- North-Caucasus Scientific Research Center of Higher School, Rostov-na-Donu (Russian Federation)
High values of superconducting transition temperature in oxide superconductors are hypothetically attributed to the d-pairing of charge carriers in the Bose condensate. The order parameter of the superconducting state forms the basis for the same representation of the crystallographic symmetry group of the parent phase which is used to transform those components of the order parameter, which describe the spontaneous deformation of the parent phase and form a real crystal. The layering of the crystal is assumed to be an unessential factor, although it may govern the type of pairing in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}. This hypothesis is supported by the model calculations which qualitatively agree with the experimental data on the temperatures of phase transitions in YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}-based solid solutions. 31 refs., 3 figs.
- OSTI ID:
- 255059
- Journal Information:
- Crystallography Reports, Vol. 40, Issue 2; Other Information: PBD: Mar-Apr 1995; TN: Translated from Kristallografiya; 40: No. 2, 203-211(1995)
- Country of Publication:
- United States
- Language:
- English
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