1. 
|
Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prosnikov M. A., Bal M. E., Kolkov M. I., Pankrats A. I., Pisarev, R., V, Christianen, P. C. M.
Заглавие : Subterahertz and terahertz spin and lattice dynamics of the insulating ferromagnet PbMnBO4
Коллективы :
RFBRRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [20-42-240006]; BASIS Foundation [21-1-4-33-1]; HFML-RU/NWO-I, a member of the European Magnetic Field Laboratory (EMFL)
Место публикации : Phys. Rev. Res. - 2022. - Vol. 4, Is. 1. - Ст.013004. - ISSN 2643-1564(eISSN), DOI 10.1103/PhysRevResearch.4.013004
Примечания : Cited References: 62. - M.A.P. greatly acknowledges D. A. Andronikova for aid, B. T. Crow for fruitful discussions, and P. Albers for technicalassistance. Crystal growth was supported by RFBR and the Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, through Research Project No. 20-42-240006. The theoretical part of the spin dynamics calculations was supported by BASIS Foundation Grant No. 21-1-4-33-1. The support of HFML-RU/NWO-I, a member of the European Magnetic Field Laboratory (EMFL) , is acknowledged
Предметные рубрики: LIGHT-SCATTERING
ANTI-STOKES
BRILLOUIN-SCATTERING
Аннотация: Orthorhombic PbMnBO4 is a rare example of an insulating ferromagnet in which the magnetic properties, in particular the strong magnetic anisotropy, are determined by the Mn3+ Jahn-Teller ion. Here, we report on the detailed investigation of magnetic excitations in the subterahertz and terahertz frequency ranges, as well as lattice excitations in the terahertz range. Using polarized azimuthally resolved Raman spectroscopy, four branches of magnetic excitations were observed and assigned to one acoustic and three optical one-magnon modes. The coupling between ferromagnetic ordering at TC=31K and the Jahn-Teller distortions of [MnO6] octahedra due to the spin-phonon interaction was directly observed for some specific phonon modes involved in these distortions. A spin-wave Hamiltonian was developed that allowed us to determine a unique set of exchange and effective anisotropy parameters. The intensity ratio of the anti-Stokes to Stokes acoustic magnon peaks is found to be anomalous and directly indicates the involvement of the magneto-optical parameters in the magnetic Raman scattering process.
WOS,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие
|
Главная
Каталог книг и брошюр библиотеки ИФ СО РАН