SUPERCONDUCTIVITY IN TETRAGONAL AND ORTHORHOMBIC STRUCTURAL PHASES OFLA(2-X)M(X)CUO(4)

Authors
KRASAVIN SE PLAKIDA NM
Citation
Se. Krasavin et Nm. Plakida, SUPERCONDUCTIVITY IN TETRAGONAL AND ORTHORHOMBIC STRUCTURAL PHASES OFLA(2-X)M(X)CUO(4), Physica. C, Superconductivity, 265(1-2), 1996, pp. 45-52
Citations number
20
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
265
Issue
1-2
Year of publication
1996
Pages
45 - 52
Database
ISI
SICI code
0921-4534(1996)265:1-2<45:SITAOS>2.0.ZU;2-D
Abstract
An effective electron-phonon model for La(2-x)M(x)CuO(4) allowing for structural phase transitions (SPT) from high-temperature tetragonal ph ase (HTT) to low-temperature orthorhombic phase (LTO) and to low-tempe rature tetragonal phase (LTT) is proposed. The dependence of the super conducting transition temperature T-c on the hole concentration n is c alculated for HTT, LTO and LIT phases using the Green function techniq ue. A dip of T-c is found at the transition to LTT phase owing to spli tting of two oxygen bands (at half filling).