The Doped Two Chain Hubbard Model

Abstract

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.

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

References in corpus (5)

• Resonating Valence Bond Theory of Coupled Heisenberg Chains
• Correlations in a two--chain Hubbard model
• Pairing and Excitation Spectrum in doped t-J Ladders
• Spin Gap Fixed Points in the Double Chain Problem
• Singlet pairing in the double chain t-J model

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