Open AccessDissipative structure in the photo-induced phase under steady light irradiation in the spin crossover complex
Author(s) -
Taishi Nishihara,
Azzdine Bousseksou,
Kōichiro Tanaka
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.031179
Subject(s) - irradiation , optics , steady state (chemistry) , phase (matter) , oscillation (cell signaling) , speckle pattern , dissipative system , materials science , light intensity , molecular physics , physics , condensed matter physics , chemistry , thermodynamics , biochemistry , quantum mechanics , nuclear physics
We report the spatial and temporal dynamics of the photo-induced phase in the iron (II) spin crossover complex Fe(ptz)(6)(BF(4))(2) studied by image measurement under steady light irradiation and transient absorption measurement. The dynamic factors are derived from the spatial and temporal fluctuation of the image in the steady state under light irradiation between 65 and 100 K. The dynamic factors clearly indicate that the fluctuation has a resonant frequency that strongly depends on the temperature, and is proportional to the relaxation rate of the photo-induced phase. This oscillation of the speckle pattern under steady light irradiation is ascribed to the nonlinear interaction between the spin state and the lattice volume at the surface.