Тип публикации: статья из журнала
Год издания: 2019
Ключевые слова: Geometric frustration, Two-magnon Raman scattering, Oxyborate
Аннотация: 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.
Издание
Журнал: Физика низких темпеpатуp
Выпуск журнала: Т. 45, № S9
Номера страниц: 1223-1230
ISSN журнала: 01326414
Место издания: Харьков
Издатель: ФТИНТ им. Б.И. Веркина НАН Украины
Персоны
- Gnezdilov V. (Institute for Condensed Matter Physics, TU Braunschweig)
- Pashkevich Yu. (O.O. Galkin Donetsk Institute for Physics and Engineering of the National Academy of Sciences of Ukraine)
- Kurnosov V. (B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine)
- Zhuravlev O.V. (O.O. Galkin Donetsk Institute for Physics and Engineering of the National Academy of Sciences of Ukraine)
- Wulferding D. (Institute for Condensed Matter Physics, TU Braunschweig)
- Lemmens P. (Institute for Condensed Matter Physics, TU Braunschweig)
- Kazak N.V. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS)
- Knyazev Yu.V. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS)
- Ovchinnikov S.G. (School of Engineering Physics and Radio Electronics, Siberian Federal University)
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