Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 101, Issue 1, Pages 205-208Publisher
SPRINGER
DOI: 10.1007/s00339-010-5779-9
Keywords
-
Funding
- Australian Research Council
Ask authors/readers for more resources
Point defects and lattice heating are two major sources for the catastrophic disordering of a crystal in equilibrium. I demonstrate that the thermal point defects formation time in a femtosecond laser (fs-laser)-excited solid is the longest of all relaxation times, while the ultra-fast contribution to the entropy changes from electrons is minor in comparison to the catastrophe value. Thus non-thermal disordering solely by electron excitation prior to the energy transfer to the lattice is proved to be thermodynamically impossible. The swiftly excited solid can be disordered only if a lattice is superheated over the critical temperature defined by the entropy catastrophe. The presented analysis of experiments on fs excitation of different solids is consistent with theory.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available