Optical and x-ray time resolved study of the structural transition in mixed valence manganites

Autor:	A. Caviezel, U. Staub, S. L. Johnson, S. O. Mariager, G. Ingold, E. Möhr-Vorobeva, M. Garganourakis, S. W. Huang, C. J. Milne, Q. X. Jia, S.-W. Cheong, P. Beaud
Přispěvatelé:	Chergui, Majed, Taylor, Antoinette, Cundiff, Steve, de Vivie-Riedle, Regina, Yamanouchi, Kaoru
Rok vydání:	2013
Předmět:	Physics Diffraction Phase transition 3D optical data storage Valence (chemistry) Condensed matter physics Phonon Superlattice QC1-999 X-ray Physics::Optics 01 natural sciences 010305 fluids & plasmas 3. Good health 0103 physical sciences Structural transition 010306 general physics
Zdroj:	XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA EPJ Web of Conferences, 41 EPJ Web of Conferences, Vol 41, p 03002 (2013)
ISSN:	2100-014X
DOI:	10.1051/epjconf/20134103002
Popis:	Time resolved optical reflectivity and x-ray diffraction techniques are employed to study the laser-induced structural response in two charge and orbitally ordered manganites. Optical data indicate a non-thermal nature of the laser-triggered phase transition via the disappearance of an optical phonon related to the charge and orbitally ordered phase. The x-ray diffraction measurements on superlattice reflections confirm the non-thermal time scale of the initial step of this phase transition but also show that the complete change of structural symmetry is not instantaneous. ISSN:2100-014X ISSN:2101-6275
Databáze:	OpenAIRE
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