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Superconducting gap for a two-leg t-J ladder | | Didier Poilblanc
; D J Scalapino
; Sylvain Capponi
; | | Date: |
26 Sep 2003 | | Journal: | Phys Rev Lett, 91 (13), 137203 | | Abstract: | Single-particle diagonal and off-diagonal Green’s functions of a two-leg t-J ladder at 1/8 doping are investigated by exact diagonalizations techniques. A numerically tractable expression for the superconducting gap is proposed and the frequency dependence of the real and imaginary parts of the gap are determined. The role of the low-energy gapped spin modes, whose energies are computed by a (one-step) contractor renormalization procedure, is discussed. | | Source: | PubMed, pmid14525334 | | Services: | Forum | Review | Favorites | |
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