Magnetic excitations in SrCu2O3: a Raman scattering study

A. Gössling; U. Kuhlmann; C. Thomsen; A. Löffert; C. Gross; W. Assmus

doi:10.1103/PhysRevB.67.052403

Magnetic excitations in SrCu2O3: a Raman scattering study

Strongly Correlated Electrons 2008-01-09 v1

Authors: 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.

Keywords

spin excitations in condensed matter magnetic materials and spin systems

Cite

@article{arxiv.0801.1303,
  title  = {Magnetic excitations in SrCu2O3: a Raman scattering study},
  author = {A. Gössling and U. Kuhlmann and C. Thomsen and A. Löffert and C. Gross and W. Assmus},
  journal= {arXiv preprint arXiv:0801.1303},
  year   = {2008}
}

Comments

4 pages, 3 figures

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