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arXiv · 0801.1303

Magnetic excitations in SrCu2O3: a Raman scattering study

A. Gössling·U. Kuhlmann·C. Thomsen·A. Löffert·C. Gross·W. Assmus
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Abstract

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+/-10 cm^(-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 J_cycl/J_perp=0.09-0.25 with a coupling constant along the rungs of J_perp approx. 1215 cm^(-1) (1750 K) in order to be consistent with other experiments and theoretical results.

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A. Gössling, U. Kuhlmann, C. Thomsen, A. Löffert, C. Gross, W. Assmus. 2008-01-08. Magnetic excitations in SrCu2O3: a Raman scattering study. https://doi.org/10.1103/physrevb.67.052403

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