Far-field terahertz spectroscopy across the charge-density-wave transition in 2H-NbSe${}_2$

Dmitriy Yavorskiy, Adil Rehman, Wojciech Brzezicki +7

Charge-density-wave (CDW) formation in 2H-NbSe${}_2$ modifies the low-energy electronic structure and gives rise to collective excitations coupled to the lattice. Here, we investigat…