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A numerical and analytical study of two holes doped into the 2D t--J model | | A. L. Chernyshev
; P. W. Leung
; R. J. Gooding
; | | Date: |
24 Sep 1997 | | Journal: | Jour. Phys. Chem. Sol. 59, 1815 (1998). | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Affiliation: | Queen’s University), P. W. Leung (Hong Kong University of Science and Technology), and R. J. Gooding (Queen’s University | | Abstract: | Exact diagonalization numerical results are presented for a 32-site square cluster, with two holes propagating in an antiferromagnetic background described by the t-J model. We characterize the wave function of the lowest energy bound state found in this calculation, which has d_{x^2-y^2} symmetry. Analytical work is presented, based on a Lang-Firsov-type canonical transformation derived quasiparticle Hamiltonian, that accurately agrees with numerically determined values for the electron momentum distribution function and the pair correlation function. We interpret this agreement as strong support for the validity of this description of the hole quasiparticles. | | Source: | arXiv, cond-mat/9709257 | | Services: | Forum | Review | PDF | Favorites | |
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