2003/03/04 by E. Orignac, Edmond Orignac, Didier Poilblanc · 4 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.68.052504
published as Phys. Rev. B 68, 052504 (2003) · RevTeX 4, 3 pages, 2 EPS figures
arxiv created 2003/03/04 · openalex publication_date 2003/08/14 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The single-particle superconducting Green's functions of a Luther-Emery liquid is computed by bosonization techniques. Using a formulation introduced by Poilblanc and Scalapino [Phys. Rev. B 66, 052513 (2002)], an asymptotic expression of the superconducting gap is deduced in the long wavelength and small frequency limit. Due to superconducting phase fluctuations, the gap exhibits as a function of size L a (1/L)^1/2K_\ensuremathρ power-law decay as well as an interesting singularity at the spectral gap energy. Similarities and differences with the two-leg t\ensuremath-J ladder are outlined.