Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI<sub>3</sub>
Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI<sub>3</sub>
We use the synergy of infrared, terahertz, and Raman spectroscopies with DFT calculations to shed light on the magnetic and lattice properties of VI3. The structural transition at TS1 = 79 K is accompanied by a large splitting of polar phonon modes. Below TS1, strong ferromagnetic fluctuations are observed. The …