Journal
PHYSICAL REVIEW B
Volume 86, Issue 17, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.86.174105
Keywords
-
Funding
- Swiss National Science Foundation [200021_124496]
- U.S. Department of Energy through the LANL/LDRD program
- U.S. Department of Energy through Center for Integrated Nanotechnologies
- NSF [DMR1104484]
- National Center of Competences in Research MUST
- National Center of Competences in Research MaNEP
- Swiss National Science Foundation (SNF) [200021_124496] Funding Source: Swiss National Science Foundation (SNF)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1104484] Funding Source: National Science Foundation
Ask authors/readers for more resources
We investigate the structural response of charge and orbitally ordered (CO/OO) manganites to ultrafast optical excitation using optical reflectivity and x-ray diffraction as a probe. We study a La0.42Ca0.58MnO3 (LCMO) thin film and a La0.25Pr0.375Ca0.375MnO3 (LPCMO) single crystal. For both materials we observe oscillations in the optical responses that are assigned to a coherent optical phonon generated via displacive excitation. The coherent phonon disappears either when increasing the temperature above T-CO/OO or when raising the excitation fluence above a certain threshold. At low excitation fluences the amplitude and lifetime of this phonon behave similarly to the order parameter of the structural phase transition.
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
Share Paper
