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 dПоказать полностьюegrees 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.

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

• 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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