Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Photoinduced transitions in magnetoresistive manganites: A comprehensive view


Rettig,  Laurenz
Swiss Light Source, Paul Scherrer Institut;
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

(Publisher version), 664KB

Supplementary Material (public)
There is no public supplementary material available

Esposito, V., Rettig, L., Abreu, E., Bothschafter, E. M., Ingold, G., Kawasaki, M., et al. (2018). Photoinduced transitions in magnetoresistive manganites: A comprehensive view. Physical Review B, 97(1): 014312. doi:10.1103/PhysRevB.97.014312.

Cite as: https://hdl.handle.net/21.11116/0000-0000-AE32-4
We use femtosecond x-ray diffraction to study the structural response of charge and orbitally ordered Pr1−xCaxMnO3 thin films across a phase transition induced by 800 nm laser pulses. By investigating the dynamics of both superlattice reflections and regular Bragg peaks, we disentangle the different structural contributions and analyze their relevant timescales. The dynamics of the structural and charge order response are qualitatively different when excited above and below a critical fluence fc. For excitations below fc the charge order and the superlattice is only partially suppressed and the ground state recovers within a few tens of nanosecond via diffusive cooling. When exciting above the critical fluence the superlattice vanishes within approximately half a picosecond followed by a change of the unit cell parameters on a 10 picoseconds timescale. At this point all memory from the symmetry breaking is lost and the recovery time increases by many order of magnitudes due to the first order character of the structural phase transition.