2004/11/30 by P. N. Bibikov · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.72.012416
published as Phys. Rev. B 72, 012416 (2005) · 10 pages, 1 figure
openalex publication_date 2005/07/22 · arxiv created 2005/08/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using coordinate Bethe ansatze we construct two-magnon states for the family of spin-ladder models with exact singlet-rung vacuum suggested by A. K. Kolezhuk and H.-J. Mikeska. The explicit formula for the zero-temperature Raman scattering cross section is derived. The corresponding line shapes are strongly asymmetric and their singularities originate only from bound states. This form of a line shape is in good correspondence to the experimental data.