Understanding Multiferroic Hexagonal Manganites by Static and Ultrafast Optical Spectroscopy
Figure 11
(a) Fourier transform amplitudes for coherent oscillation of YMnO3 [39]. Reprinted with permission from Jang et al. [39]. Copyright 2010, American Institute of Physics. (b) Temperature dependence oscillation period in at various wavelengths of HoMnO3. Inset: the evolution of the oscillation component in at various temperatures [38]. Figures were reproduced with permission from Shih et al. [38].