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- W1979827169 abstract "In the two-chain Hubbard system the on-site Coulumb interaction at each site generates a pair-transfer interaction between the two bands consisting of bonding and antibonding orbitals for the two sites located on the opposite chains and linked by the transverse transfer energy. It is shown to be as strong as the intraband repulsive interaction generated in the same way so that it can give rise to superconductivity due to the two-band effect. Verifying this reasoning, exact-and also variational-diagonalization calculations clearly indicate that a superconducting state arises in this system in an appropriate region of band and filling parameters for a wide range of Coulomb strengths. A scaling analysis with systems of electron number equal to 6, 10 and 14 supports the assertion that the superconductivity survives in the limit of infinite size. The essence of this mechanism looks relevant to a wide variety of systems including D[M(dmit)2]2 superconductors and high-Tc oxides." @default.
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- W1979827169 date "1994-03-01" @default.
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- W1979827169 title "Superconducting transition of the two-chain Hubbard model indicated by diagonalization calculations" @default.
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- W1979827169 doi "https://doi.org/10.1016/0921-4534(94)90553-3" @default.
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