| Original Articles |
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Chaotic Dynamics of a Periodically Modulated Josephson Junction |
| WU Qin1;LI Fei2 |
| 1School of Basic Medical Science, Guangdong Medical College, Dongguan 5238082Department of Physics, Nanjing University, Nanjing 210008 |
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| Cite this article: |
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WU Qin, LI Fei 2007 Chin. Phys. Lett. 24 640-643 |
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Abstract We study the chaotic dynamics of a periodically modulated Josephson junction with damping. The general solution of the first-order perturbed equation is constructed by using the direct perturbation technique. It is theoretically found that the boundedness conditions of the general solution contain the
Melnikov chaotic criterion. When the perturbation conditions cannot be satisfied, numerical simulations demonstrate that the system can step into chaos through a period doubling route with the increase of the amplitude of the modulating term. Regulating specific parameters can effectively suppress the chaos.
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| Keywords:
05.45.-a
05.45.Pq
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Received: 24 October 2006
Published: 08 February 2007
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| PACS: |
05.45.-a
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(Nonlinear dynamics and chaos)
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05.45.Pq
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(Numerical simulations of chaotic systems)
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