CRITICAL PARAMETERS OF HIGH-TEMPERATURE SUPERCONDUCTIVITY IN YTTRIUM CUPRATES.

[In Russian. / En russe.]

Type of article: Article

Summary

A THEORY IS PROPOSED WHICH OFFERS AN EXPLANATION FOR SUPERCONDUCTING PROPERTIES OF YTTRIUM CUPRATES. IT IS SHOWN THAT THE INTERBAND TRANSITION BETWEEN ONE-DIMENSIONAL BAND OF CHAINS AND TWO-DIMENSIONAL BAND OF LAYERS RESULTS IN HIGH CRITICAL TEMPERATURES. THE UPPER CRITICAL MAGNETIC FIELD IS CALCULATED. THE CRITICAL FIELD IN THE REGION OF SELF-CONSISTENT FIELD IS SHOWN TO BE DETERMINED BY DEPENDENCES TYPICAL OF COMMON ANISOTROPIC SUPERCONDUCTORS. IN THE REGION OF STRONGLY INTERACTING FLUCTUATIONS WHICH IS FAIRLY WIDE IN YTTRIUM CUPRATES, THE UPPER CRITICAL MAGNETIC FIELD AS A FUNCTION OF TEMPERATURE HAS A POSITIVE CURVATURE AND DEPENDS ON THE CRITICAL INDEX OF THE SIMILARITY THEORY.

Details

Original title: [In Russian. / En russe.]
Record ID : 1990-0023
Languages: Russian
Source: Fiz. nizk. Temp. - vol. 15 - n. 2
Publication date: 1989
Document available for consultation in the library of the IIR headquarters only.

Links

See other articles in this issue (2)
See the source

Indexing

Themes: Superconduction
Keywords: Yttrium; Superconduction; Oxide; Copper; Ceramics; Critical temperature; Superconductor; High temperature; Magnetic field