Abstract
We report a Raman scattering study of single-crystalline homometallic oxyborate Mn2OBO3, a compound realizing a one-dimensional ribbon-structure. Phonon excitations as a function of temperature and light polarization are compared to lattice dynamical calculations, giving evidence for a strong coupling between lattice and magnetic degrees of freedom. Furthermore, a broader feature with a distinct structure emerges at low temperatures. Based on our theoretical analysis, we assign this signal to specific two-magnon scattering processes related to high energy flat-band magnon branches.
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CITATION STYLE
Gnezdilov, V., Pashkevich, Y., Kurnosov, V., Zhuravlev, O. V., Wulferding, D., Lemmens, P., … Ovchinnikov, S. G. (2019). Magnetic and structural correlations in the warwickite Mn2OBO3. Low Temperature Physics, 45(9), 1223–1230. https://doi.org/10.1063/1.5121280
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