Modeling dynamically heterogeneous coupled relaxations.
A model describing dynamically heterogeneous relaxation in complex coupled systems is presented. The model predicts the splitting of a high-temperature single Debye relaxation to a low-temperature bimodal relaxation. The bimodal process shows a crossover from a Debye-type relaxation to an approximately stretched-exponential relaxation. Some general features of relaxation in complex systems emerge from the predictions of the model, and a comparison of the model with experiments is reported.
Huang
Y N
YN
Department of Physics, Nanjing University, Nanjing 210093, China.
Wang
C J
CJ
Ngai
K L
KL
Wang
Y N
YN
Riande
E
E