2003/02/06 by A. Gössling, A. Gößling, Uwe Kuhlmann +6
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Chemistry #Condensed matter physics #Coupling (piping) #Crystallography #Ferromagnetism #Magnetic and transport properties of perovskites and related materials #Magnon #Materials science #Nuclear magnetic resonance #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.67.052403
published as Phys. Rev. B 67, 052403 (2003) · 4 pages, 3 figures
openalex publication_date 2003/02/06 · arxiv created 2008/01/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigated temperature-dependent Raman spectra of the one-dimensional spin-ladder compound SrCu2O3. At low temperatures a two-magnon peak is identified at 3160\ifmmode±\else\textpm\fi10cm^\ensuremath-1 and its temperature dependence analyzed in terms of a thermal-expansion model. We find that the two-magnon peak position must include a cyclic ring exchange of Jcycl/J_\ensuremath⊥=0.09--0.25 with a coupling constant along the rungs of J_\ensuremath⊥\ensuremath≈1215cm^\ensuremath-1 (1750 K) in order to be consistent with other experiments and theoretical results.