Two-orbital models with interorbital t-J or t-V interactions exhibit incommensurate d_xy pair density wave superconductivity driven by interband pairing, confirmed by RPA and strong-coupling hard-core pair calculations showing period-2 PDW over wide fillings.
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DMRG calculations on the two-leg Lieb ladder Hubbard model identify a ferrimagnetic insulator at half filling and a narrow superconducting Luther-Emery phase near filling 2/3.
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d-Wave pair density wave superconductivity in a two-orbital model
Two-orbital models with interorbital t-J or t-V interactions exhibit incommensurate d_xy pair density wave superconductivity driven by interband pairing, confirmed by RPA and strong-coupling hard-core pair calculations showing period-2 PDW over wide fillings.
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From Ferrimagnetic Insulator to superconducting Luther-Emery Liquid: A DMRG Study of the Two-Leg Lieb Lattice
DMRG calculations on the two-leg Lieb ladder Hubbard model identify a ferrimagnetic insulator at half filling and a narrow superconducting Luther-Emery phase near filling 2/3.