Phonon States in NbTe${}_4$ and TaTe${}_4$ Quasi-One-Dimensional van der Waals Crystals

Zahra Ebrahim Nataj, Fariborz Kargar, Sergiy Krylyuk +7

We report the results of polarization-dependent Raman spectroscopy of phonon states in single-crystalline quasi-one-dimensional NbTe${}_4$ and TaTe${}_4$ van der Waals materials. The m…