Limits on Phase Separation for Two-Dimensional Strongly Correlated Electrons

Abstract

From calculations of the high temperature series for the free energy of the two-dimensional t-J model we construct series for ratios of the free energy per hole. The ratios can be extrapolated very accurately to low temperatures and used to investigate phase separation. Our results confirm that phase separation occurs only for J/t greater than 1.2. Also, the phase transition into the phase separated state has Tc of approximately 0.25J for large J/t.

4 pages, 6 figures

References in corpus (3)

• Charge fluctuations close to phase separation in the two dimensional t-J model
• Phase Separation of the Two-Dimensional t-J model
• Phase separation in the 2D Hubbard model: a fixed-node quantum Monte Carlo study

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