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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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.