2004/01/31 by D. Poilblanc, Didier Poilblanc, E. Orignac +4 · 1 citation
Engineering · Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Superconducting Materials and Applications #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.69.220406
published as Phys. Rev. B 69, 220406 (2004) · 5 pages, 5 figures
arxiv created 2004/01/31 · openalex publication_date 2004/06/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The spin dynamics of a doped two-leg spin ladder is investigated by numerical techniques. We show that a hole pair-magnon boundstate evolves at finite hole doping into a sharp magnetic excitation below the two-particle continuum. This is supported by a field theory argument based on a SO(6)-symmetric ladder. Similarities and differences with the resonant mode of the high-TC cuprates are discussed.