Ground State Phases of the Doped 4-Leg t-J Ladder

Details Ground State Phases of the Doped 4-Leg t-J Ladder Ground State Phases of the Doped 4-Leg t-J Ladder

1996-08-28

arxiv.org/abs/cond-mat/9608138v1

Physics

Condensed Matter

10 pages, with 6 Postscript figures

Scientific paper

10.1103/PhysRevB.55.R14701

Using density matrix renormalization group techniques, we have studied the ground state of the 4-leg t-J ladder doped near half-filling. Depending upon J/t and the hole doping x, three types of ground state phases are found: (1) a phase containing d_{x^2-y^2} pairs; (2) a striped CDW domain-wall phase, and (3) a phase separated regime. A CDW domain-wall consists of fluctuating hole pairs and this phase has significant d_{x^2-y^2} pair field correlations.

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