Dissemin is shutting down on January 1st, 2025

Published in

American Physical Society, Physical Review Letters, 13(91), 2003

DOI: 10.1103/physrevlett.91.137203

Links

Tools

Export citation

Search in Google Scholar

Superconducting Gap for a Two-Legt−JLadder

Journal article published in 2003 by Didier Poilblanc, D. J. Scalapino, Sylvain Capponi ORCID
This paper is available in a repository.
This paper is available in a repository.

Full text: Download

Green circle
Preprint: archiving allowed
Upload
Green circle
Postprint: archiving allowed
Upload
Green circle
Published version: archiving allowed
Upload
Policy details
Data provided by SHERPA/RoMEO

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.