Magnon-phonon coupling in Fe2SiO4

A low-temperature calorimetric study of synthetic (forsterite+fayalite) {(Mg2SiO4+Fe2SiO4)} solid solutions: An analysis of vibrational, magnetic, and electronic contributions to the molar heat capacity and entropy of mixing

“…Kolesov and Geiger [20] discuss the nature of some of these local magnetic-phonon interactions in lieu of their single-crystal Raman spectra of fayalite. Here, for example, observed broadening of the SiO 4 stretching modes is consistent with an {Fe 2+ (1) + Fe 2+ (2)} exchange energy of 4.7 cm À1 derived from inelastic neutron scattering and far-infrared measurements [24]. Magnons in fayalite occur at low energies and they have also been studied using FTIR methods [25,26].…”

“…The matter is far from simple in the case of fayalite, since both phononmagnon coupling [24] and magnetic exchange-phonon coupling may occur [20]. Kolesov and Geiger [20] discuss the nature of some of these local magnetic-phonon interactions in lieu of their single-crystal Raman spectra of fayalite.…”

Magnon polaron formed by selectively coupled coherent magnon and phonon modes of a surface patterned ferromagnet

“…In this case the experimental methods with selective probing of magnons and phonons with a certain wave vector, e.g. Brillouin light scattering [3] or neutron scattering [23], indicate the avoided crossing and confirm formation of the hybridized state. However, in the time-resolved experiment with excitation of a bunch of the phonon and magnon modes within broad coherent wave packets, fast dephasing of both phonons and magnons suppresses formation of a magnon polaron.…”