منابع مشابه
On kink-dynamics of Stacked-Josephson Junctions
Dynamics of a fluxon in a stack of coupled long Josephson junctions is studied numerically. Based on the numerical simulations, we show that the dependence of the propagation velocity c on the external bias current γ is determined by the ratio of the critical currents of the two junctions J .
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A spatially-discrete sine-Gordon system with some novel features is described. There is a topological or Bogomol'nyi lower bound on the energy of a kink, and an explicit static kink which saturates this bound. There is no Peierls potential barrier, and consequently the motion of a kink is simpler, especially at low speeds. At higher speeds, it radiates and slows down.
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InA1As/InGaAs/InP High Electron Mobility Transistors (HEMTs) show significant promise for low-noise and high-power millimeter-wave applications (60 GHz and above). Unfortunately, these HEMTs show a detrimental behavior in their output characteristics, the kink effect. The kink is a sudden rise in drain current at a certain drain-to-source voltage that results in high drain conductance and trans...
متن کاملRipple Dynamics and Benthic Transformations under Variable Wave Forcing
Previous work has shown that sound penetration into sandy sediments at low grazing angles is greatly enhanced when ripples are present on the seafloor. The reasons for this phenomenon are still under investigation. To this end, a comprehensive understanding of ripple dynamics and their interaction with acoustic penetration into sediments has been sought in two recent initiatives: the Ripples DR...
متن کاملOptical kinks and kink-kink and kink-pulse interactions in resonant two-level media
An optical kink is a shock-wave-like field structure which can appear in a resonant two-level medium as a result of the nonlinear process of self-steepening. We numerically simulate this process using an adiabatically switching waveform as an input and confirm the self-similarity of resulting kinks. The analysis is also applicable to a more general waveform with a decaying trailing edge which w...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2001
ISSN: 1063-651X,1095-3787
DOI: 10.1103/physreve.64.041302