Nucleation of Kinetic Ising Model under Oscillating Field |
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Authors: | Kun Li Hui-jun Jiang Han-shuang Chen Zhong-huai Hou |
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Institution: | 1.Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China2.School of Physics and Material Science, Anhui University, Hefei 230039, China3.Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China;Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Tech-nology of China, Hefei 230026, China |
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Abstract: | We have studied the nucleation process of a two-dimensional kinetic Ising model subject to a bias oscillating external field, focusing on how the nucleation time depends on the oscillation frequency. It is found that the nucleation time shows a clear-cut minimum with the variation of oscillation frequency, wherein the average size of the critical nuclei is the smallest, indicating that an oscillating external field with an optimal frequency can be much more favorable to the nucleation process than a constant field. We have also investigated the effect of the initial phase of the external field, which helps to illustrate the occurrence of such an interesting finding. |
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Keywords: | Kinetic Ising model Nucleation Oscillating field |
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