The Doped Two Chain Hubbard Model

Details The Doped Two Chain Hubbard Model The Doped Two Chain Hubbard Model

1994-09-15

arxiv.org/abs/cond-mat/9409065v1

Physics

Condensed Matter

10 pages and 5 postscript figures, RevTeX 3.0, UCI-CMTHE-94-05

Scientific paper

10.1209/0295-5075/30/3/007

The properties of the two-chain Hubbard Model doped away from half-filling are investigated. The charge gap is found to vanish, but a finite spin gap exists over a range of interchain hopping strength $t_\perp$. In this range, there are modified $d_{x^2-y^2}$--like pairing correlations whose strength is correlated with the size of the spin gap. It is found that the pair field correlations are enhanced by the onsite Coulomb interaction U.

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