Journal
PHYSICAL REVIEW B
Volume 61, Issue 9, Pages 6320-6326Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.61.6320
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We make a critical analysis of numerical results for and against phase separation and stripe formation in the t-J model. We argue that the frustrated phase separation mechanism for stripe formation requires phase separation at too high a doping for it to be consistent with existing numerical studies of the t-J model. We compare variational energies for various methods, and conclude that the most accurate calculations for large systems appear to be from the density-matrix renormalization group. These calculations imply that the ground state of the doped t-J model is striped, not phase separated.
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