Article (Scientific journals)
Temperature-dependent photo-response in multiferroic BiFeO3 revealed by transmission measurements
Meggle, F.; Viret, M.; Kreisel, Jens et al.
2019In JOURNAL OF APPLIED PHYSICS, 125 (11)
Peer reviewed
 

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Abstract :
[en] We studied the light-induced effects in BiFeO3 single crystals as a function of temperature by means of optical spectroscopy. Here, we report the observation of several light-induced absorption features which are discussed in terms of the photostriction effect and are interpreted in terms of excitons. The temperature dependence of their energy position suggests a possible coupling between the excitons and the lattice vibrations. Moreover, there are hints for anomalies in the temperature evolution of the excitonic features, which might be related to the temperature-induced magnetic phase transitions in BiFeO3. Our findings suggest a coupling between light-induced excitons and the lattice and spin degrees of freedom, which might be relevant for the observed ultrafast photostriction effect in multiferroic BiFeO3. Published under license by AIP Publishing.
Disciplines :
Physics
Author, co-author :
Meggle, F.
Viret, M.
Kreisel, Jens ;  University of Luxembourg > Rectorate
Kuntscher, C. A.
External co-authors :
yes
Language :
English
Title :
Temperature-dependent photo-response in multiferroic BiFeO3 revealed by transmission measurements
Publication date :
2019
Journal title :
JOURNAL OF APPLIED PHYSICS
ISSN :
0021-8979
Volume :
125
Issue :
11
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 31 July 2019

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