Lattice dynamics and phase transitions in Fe${}_{3-x}$GeTe${}_2$

A. Milosavljević, A. Šolajić, S. Djurdjić-Mijin +6

We present Raman spectroscopy measurements of the van der Waals bonded ferromagnet Fe${}_{3-x}$GeTe${}_2$, together with lattice dynamics. Four out of eight Raman active modes are obse…