PHONON-INDUCED D-WAVE PAIRING IN THE 2-DIMENSIONAL HUBBARD-MODEL

Authors
MIERZEJEWSKI M ZIELINSKI J
Citation
M. Mierzejewski et J. Zielinski, PHONON-INDUCED D-WAVE PAIRING IN THE 2-DIMENSIONAL HUBBARD-MODEL, Physical review. B, Condensed matter, 52(5), 1995, pp. 3079-3082
Citations number
33
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
52
Issue
5
Year of publication
1995
Pages
3079 - 3082
Database
ISI
SICI code
0163-1829(1995)52:5<3079:PDPIT2>2.0.ZU;2-X
Abstract
We discuss phonon-induced anisotropic superconductivity of strongly co rrelated quasiparticles within the two-dimensional Hubbard model. The generalized Frolich-like canonical transformation leads to pairing int eractions that become repulsive for vanishing concentration of holes b ut are attractive at low dopings. Our results indicate that the electr on-phonon coupling in the presence of strong electron-electron correla tions favors the formation of d-wave superconductivity.