QUASI-PARTICLES AND SUPERCONDUCTIVITY IN THE T-T'-J MODEL

Authors
PLAKIDA NM OUDOVENKO VS HORSCH P LIECHTENSTEIN A
Citation
Nm. Plakida et al., QUASI-PARTICLES AND SUPERCONDUCTIVITY IN THE T-T'-J MODEL, Physica. C, Superconductivity, 282, 1997, pp. 1739-1740
Citations number
14
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
282
Year of publication
1997
Part
3
Pages
1739 - 1740
Database
ISI
SICI code
0921-4534(1997)282:<1739:QASITT>2.0.ZU;2-T
Abstract
A quasiparticle spectrum of doped holes and their superconducting pair ing in the CuO2 plane is studied within the t-t'-J model. Numerical so lution of the Eliashberg equations proves d-wave pairing of spin polar ons mediated by spin-fluctuation exchange, as well as a strong doping dependence of quasiparticle bandwidth. A maximum T-c similar or equal to 0.013t is observed at an optimal doping delta(opt) similar or equal to 0.15-0.25 depending on t'.