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Article overview
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Energetics of Domain Walls in the 2D t-J model | | Steven R. White
; D.J. Scalapino
; | | Date: |
27 Dec 1997 | | Subject: | Strongly Correlated Electrons; Superconductivity | cond-mat.str-el cond-mat.supr-con | | Affiliation: | University of California, Irvine) and D.J. Scalapino (University of California,Santa Barbara | | Abstract: | Using the density matrix renormalization group, we calculate the energy of a domain wall in the 2D t-J model as a function of the linear hole density
ho_ell, as well as the interaction energy between walls, for J/t=0.35. Based on these results, we conclude that the ground state always has domain walls for dopings 0 < x < 0.3. For x < 0.125, the system has (1,0) domain walls with
ho_ell ~ 0.5, while for 0.125 < x < 0.17, the system has a possibly phase-separated mixture of walls with
ho_ell ~ 0.5 and
ho_ell =1. For x > 0.17, there are only walls with
ho_ell =1. For
ho_ell = 1, diagonal (1,1) domain walls have very nearly the same energy as (1,0) domain walls. | | Source: | arXiv, cond-mat/9801274 | | Services: | Forum | Review | PDF | Favorites | |
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