کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1818040 1525706 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear dynamics of Josephson vortices in a film screen under dc and ac magnetic fields
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Nonlinear dynamics of Josephson vortices in a film screen under dc and ac magnetic fields
چکیده انگلیسی
We present detailed numerical simulations of Josephson vortices in a long Josephson junction perpendicular to a thin film screen under strong dc and ac magnetic fields. By solving the sine-Gordon equation, we calculated the threshold magnetic field for penetration of fluxons as a function of frequency, and the power dissipated by oscillating fluxons as functions of the ac field amplitude and frequency. We considered the effects of superimposed ac and dc fields, and a bi-harmonic magnetic field resulting in a vortex ratchet dynamics. The results were used to evaluate the contribution of weak-linked grain boundaries to the nonlinear surface resistance of polycrystalline superconductors under strong electromagnetic fields, particularly thin film screens and resonator cavities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 506, 15 November 2014, Pages 59-68
نویسندگان
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