Abstract
The stochastic kinetics of photoinduced transition in spin-crossover systems, as representatives of synthetic molecular magnetic materials, was reviewed. The focus has been done on the macroscopic phenomenological models, which were described by dynamic potential in terms of Lyapunov functions and obeys to Langevin kinetics with white and colored stochastic processes. By corresponding Fokker–Planck equation was studied the evolution of probability of system states. For the system with light-induced transition which is additionally driven by external periodic force it has been shown the possibility of resonance enhancement of magnetization at certain values of the amplitude of periodic signal and noise intensity. The stochastic resonance phenomenon was analyzed by signal-to-noise ratio for Markovian and non-Markovian noise, various amplitudes and frequencies of periodic signal, and also variation of noise intensity.
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Acknowledgements
The work at University of New Orleans was supported by the National Science Foundation under the NSF EPSCoR Cooperative Agreement No. EPS-1003897 with additional support from the Louisiana Board of Regents.
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Gudyma, I., Maksymov, A. (2016). Phenomenological Models of Photoinduced Transition in Spin-Crossover Materials. In: Fesenko, O., Yatsenko, L. (eds) Nanophysics, Nanophotonics, Surface Studies, and Applications. Springer Proceedings in Physics, vol 183. Springer, Cham. https://doi.org/10.1007/978-3-319-30737-4_6
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