Stripes in a three-chain Hubbard ladder: A comparison of density-matrix renormalization group and constrained-path Monte Carlo results

Article

关键词: T-J LADDER;    HARTREE-FOCK;    MODEL;    PHASE;    MAGNETISM;    STATES;    HOLES;    ORDER;    SPINS;   

DOI  :  10.1103/PhysRevB.61.3251

来源: SCIE

【 摘 要 】

Using both the density-matrix renormalization group method and the constrained-path quantum Monte Carlo method, we studied the ground-state energies and the spin and hole densities of a 12X3 Hubbard model with open boundary conditions and six holes doped away from half-filling. Results obtained with these two methods agree well in the small and intermediate U regimes. For U/t greater than or equal to 6 we find a ground-state with charge inhomogeneities consistent with stripes.

【 授权许可】

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