A possible soliton-like polaron model for superconductors Y1-xCaxBa2Cu3-xMxO7-delta (M = Fe, Ni)

Authors
Wang, Y Chen, CY Huang, XW Wang, KL
Citation
Y. Wang et al., A possible soliton-like polaron model for superconductors Y1-xCaxBa2Cu3-xMxO7-delta (M = Fe, Ni), ACT PHY C E, 8(3), 1999, pp. 193-198
Citations number
17
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SINICA-OVERSEAS EDITION
ISSN journal
10003290 → ACNP
Volume
8
Issue
3
Year of publication
1999
Pages
193 - 198
Database
ISI
SICI code
1000-3290(199903)8:3<193:APSPMF>2.0.ZU;2-7
Abstract
Using 1+1 soliton-like polaron model of a deformable continuum, the critica l temperature and the energy gap in high-temperature superconductors Y1-xCa xBa2Cu3-xMxO7-delta(M=Fe, Ni) are studied in the framework of finite temper ature Green's function theory. The ratio 2 Delta/k(B)T(c)=3.9 is obtained. Theoretical results are found in good agreement with the experimental data.