A New Phase Diagram for the t-J Model

Details A New Phase Diagram for the t-J Model A New Phase Diagram for the t-J Model

1996-10-23

arxiv.org/abs/cond-mat/9610172v1

Phys. Lett. A 225, (1997) 331-340

Physics

Condensed Matter

Strongly Correlated Electrons

17 pages, Latex, 6 figures

Scientific paper

10.1016/S0375-9601(96)00895-X

We study the so-called nonmagnetic phases (dimer and flux states) in the t-J model below half filling. We present a new phase diagram, at zero and finite temperature, that includes broad areas of phase coexistence (dimer-flux or flux-uniform), in accordance with experimental and numerical data on the possibility of separation into hole-rich and hole-poor regions. We also briefly comment on some techniques used in the literature to discuss phase separation in the t-J model.

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