Noise-induced optical bistability and state transitions in spin-crossover solids with delayed feedback

被引：0
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作者：
Xiuli Sang
Chun-Hua Zeng
Hua Wang
机构：
[1] Kunming University of Science and Technology,Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education
[2] Kunming University of Science and Technology,Faculty of Science
来源：
The European Physical Journal B | 2013年 / 86卷
关键词：
Statistical and Nonlinear Physics;
D O I：
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摘要：
Considering the time-delayed feedback and environmental perturbations in spin-crossover system, we construct a stochastic delayed differential equation to study the state transitions from the low spin (LS) state to the high spin (HS) state in spin-crossover solids. It is shown that the delayed feedback and noise can induce optical bistability and state transitions. The mean first-passage time (MFPT) of the transition from the LS state to the HS state as the function of the noise intensity exhibits a maximum, and the noise-enhanced stability is observed. However the MFPT decreases with increase of the delayed feedback intensity, thus the delayed feedback accelerates the conversion from the LS state to the HS state.
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