STABILITY OF S-WAVE PAIRING STATE IN THE 2-D EXTENDED HUBBARD-MODEL(ID)

Authors
TSUCHIURA H TANAKA Y USHIJIMA Y
Citation
H. Tsuchiura et al., STABILITY OF S-WAVE PAIRING STATE IN THE 2-D EXTENDED HUBBARD-MODEL(ID), Journal of the Physical Society of Japan, 64(3), 1995, pp. 922-926
Citations number
16
Categorie Soggetti
Physics
Journal title
Journal of the Physical Society of Japan → ACNP
ISSN journal
00319015
Volume
64
Issue
3
Year of publication
1995
Pages
922 - 926
Database
ISI
SICI code
0031-9015(1995)64:3<922:SOSPSI>2.0.ZU;2-F
Abstract
Coexistence of the s and d(x2-y2)-wave (d-wave) pairing is investigate d in the two-dimensional (2-D) extended Hubbard model with on-site rep ulsive and inter-site attractive interactions using the mean-held appr oximation at T = 0 K. The next-nearest-neighbor hopping effect can ind uce the coexistence of the s and d-wave pairing. It is found that in s uch a case, s + id-wave pairing state becomes most stable.