Abstract
We present a complete characterization of the unit cell dynamics of a laser-excited tellurium crystal using femtosecond x-ray diffraction. The analysis offers a quantitative measure of the unit cell dynamics without making any assumptions on the symmetry of the excited-state motion. The results show a large-amplitude coherently excited mode quantitatively consistent with the predictions of a density functional theory model.
- Received 10 July 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.205501
©2009 American Physical Society