Full reconstruction of a crystal unit cell structure during coherent femtosecond motion.
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 A(1) mode quantitatively consistent with the predictions of a density functional theory model.
Johnson
S L
SL
Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland. steve.johnson@psi.ch
Vorobeva
E
E
Beaud
P
P
Milne
C J
CJ
Ingold
G
G