The authors study the charge-density-wave (CDW) compound 2H-TaSe2 by inelastic x-ray scattering combined with photoemission spectroscopy. They find evidence for a precursor region above the CDW transition temperature, which is characterized by an overdamped phonon mode and is not detectable by photoemission.
- Xingchen Shen
- Rolf Heid
- Frank Weber