Entropy driven atomic motion in laser-excited bismuth

Details Entropy driven atomic motion in laser-excited bismuth Entropy driven atomic motion in laser-excited bismuth

2011-04-07

arxiv.org/abs/1104.1327v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures, accepted in Physical Review Letters

Scientific paper

We introduce a thermodynamical model based on the two-temperature approach in order to fully understand the dynamics of the coherent A$_{1g}$ phonon in laser-excited bismuth. Using this model, we simulate the time evolution of (111) Bragg peak intensities measured by Fritz {\it{et al}} [Science {\bf 315}, 633 (2007)] in femtosecond X-ray diffraction experiments performed on a bismuth film for different laser fluences. The agreement between theoretical and experimental results is striking not only because we use fluences very close to the experimental ones but also because most of the model parameters are obtained from {\it{ab-initio}} calculations performed for different electron temperatures.

Affiliated with

Also associated with

No associations

Rating

Entropy driven atomic motion in laser-excited bismuth does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Entropy driven atomic motion in laser-excited bismuth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Entropy driven atomic motion in laser-excited bismuth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-717969