Phase diagram of the weak-coupling two-dimensional t-t ' Hubbard model at low and intermediate electron density

Authors
Hlubina, R
Citation
R. Hlubina, Phase diagram of the weak-coupling two-dimensional t-t ' Hubbard model at low and intermediate electron density, PHYS REV B, 59(14), 1999, pp. 9600-9605
Citations number
30
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
14
Year of publication
1999
Pages
9600 - 9605
Database
ISI
SICI code
0163-1829(19990401)59:14<9600:PDOTWT>2.0.ZU;2-K
Abstract
We study the stability of the ferromagnetic phase of the t-t' weak-coupling Hubbard model at low and intermediate electron density within the T-matrix . approximation. The superconducting instability of the paramagnetic phase is discussed by a perturbative evaluation of the superconducting vertex. [S 0163-1829(99)11413-9].