Phase separation of the two-dimensionalt−Jmodel

1997/05/16 by C. T. Shih, Y. C. Chen, T. K. Lee +1 · 4 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.57.627

LaTex 5 pages, 4 figures

arxiv created 1997/05/16 · openalex publication_date 1998/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The boundary of phase separation of the two-dimensional t\ensuremath-J model is investigated by the power-Lanczos method and Maxwell construction. The method is similar to a variational approach and it determines the lower bound of the phase-separation boundary with J_c/t=0.6\ifmmode±\else\textpm\fi0.1 in the limit n_e\ensuremath∼1. In the physically interesting regime of high-T_c superconductors where 0.3<J/t<0.5 there is no phase separation.

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• Finite compressibility in the low-doping region of the two-dimensionalt−Jmodel
• d-Wave Pairing Correlation in the Two-Dimensionalt−JModel
• Phase separation and stripe formation in the two-dimensionalt−Jmodel: A comparison of numerical results