Journal
PHYSICAL REVIEW LETTERS
Volume 108, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.087601
Keywords
-
Categories
Funding
- U.S. DOE [DE-FG02-07ER46431]
- U.S. DOE, Basic Energy Sciences, Materials Sciences and Engineering Division
- Office of Naval Research (ONR) [N00014-06-1-0459, N00014-11-1-0578]
- German Research Council [SFB 616]
- DOE Office of Science
- Swedish Science Council (VR)
Ask authors/readers for more resources
We show that light drives large-amplitude structural changes in thin films of the prototypical ferroelectric PbTiO3 via direct coupling to its intrinsic photovoltaic response. Using time-resolved x-ray scattering to visualize atomic displacements on femtosecond time scales, photoinduced changes in the unit-cell tetragonality are observed. These are driven by the motion of photogenerated free charges within the ferroelectric and can be simply explained by a model including both shift and screening currents, associated with the displacement of electrons first antiparallel to and then parallel to the ferroelectric polarization direction.
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