Response in kinetic Ising model to oscillating magnetic fields |
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| Institution: | 1. Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S.Kovalevskoi 18, Ekaterinburg 620990, Russia;2. Institute of Physics, DSC, Russian Academy of Sciences, ul. Yaragskogo 94, Makhachkala, Daghestan 367003, Russia;1. Departamento de Matemática - Centro Federal de Educação Tecnológica de Minas Gerais, CEFET–MG, Av. Amazonas 7675, Belo Horizonte, MG, Brazil;2. Instituto de Matemática - Universidade Federal de Alagoas, UFAL, Av. Lourival Melo Mota, S/N, Tabuleiro do Martins, Maceió, AL, Brazil;1. ERC Incorporated, Air Force Research Laboratory, 10 E. Saturn Blvd., Edwards AFB, CA 93524, USA;2. J. Crayton Pruitt Family Department of Biomedical Engineering and Department of Chemical Engineering, University of Florida, PO Box 116131, Gainesville, FL 32611-6131, USA |
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| Abstract: | Ising models obeying Glauber dynamics in a temporally oscillating magnetic field are analyzed. In the context of stochastic resonance, the response in the magnetization is calculated by means of both a mean-field theory with linear-response approximation, and the time-dependent Ginzburg-Landau equation. Analytic results for the temperature and frequency dependent response, including the resonance temperature, compare favorably with simulation data. |
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