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Research on flux-flow oscillators induced different types of pinning potentials
Authors:Y. Yamada  K. Nakajima  K. Nakajima
Affiliation:1. Department of Electrical and Computer Engineering, Oyama National College of Technology, Oaza-Nakakuki 771, Oyama 323-0806, Japan;2. Graduate School of Science and Engineering, Yamagata University, Jonan 4-3-16, Yonezawa 992-8510, Japan;3. Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
Abstract:
We have studied dynamics of Josephson vortices in strongly coupled long Josephson junctions stack, such as an intrinsic Josephson junction, by numerical simulations based on coupled sine–Gordon equations considering a periodic pinning potential. In this report, we investigate flux-flow oscillators induced two types of pinning potentials. One is magnetic periodic pinning potential, the other is periodic bias currents. Our results demonstrate that the periodic pinning potential can develop the generated power of flux-flow oscillator in certain condition.
Keywords:Josephson junction   Vortex   Flux-flow   Sine&ndash  Gordon equation   Simulation
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