2003/03/28 by Didier Poilblanc, D. J. Scalapino, Sylvain Capponi · 1 citation
Engineering · Physics and Astronomy · #Magnetic confinement fusion research #Physics of Superconductivity and Magnetism #Superconducting Materials and Applications #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.91.137203
published as Phys. Rev. Lett. 91, 137203 (2003) · 3 pages, 7 figures
arxiv created 2003/03/28 · openalex publication_date 2003/09/24 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.