Asymmetrical solutions and role of thermal fluctuations in dc current driven extended Josephson junction
نویسندگان
چکیده
منابع مشابه
Current responses and voltage fluctuations in Josephson-junction systems
– We consider arrays of Josephson junctions as well as single junctions in both the classical and quantum-mechanical regimes, and examine the generalized (frequency-dependent) resistance, which describes the dynamic responses of such Josephson-junction systems to external currents. It is shown that the generalized resistance and the power spectrum of voltage fluctuations are related via the flu...
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Radiative effects accompanying a fluxon—antifluxon collision on the background of a localized inhomogeneity (microshortor microresistance) or in a randomly inhomogeneous long Josephson junction arestudied. The total emitted energy andthe corresponding threshold value of the bias current density for radiative annihilation of a fluxon—antifluxon pair into a breather are found. Theobtainedresults ...
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We present a review of our previous numerical studies on non equilibrium vortex dynamics in Josephson Junction arrays (JJA) driven by a dc current. Dynamical phase diagrams for different magnetic fields, current directions and varying temperature are discussed and compared. First, the effect of thermal fluctuations in a current driven diluted vortex lattice (VL) is analyzed. The case of f = 1/2...
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We propose to probe the distribution of current fluctuations by means of the escape probability histogram of a Josephson junction (JJ), obtained using very short bias current pulses in the adiabatic regime, where the low-frequency component of the current fluctuations plays a crucial role. We analyze the effect of the third cumulant on the histogram in the small skewness limit, and address two ...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 2012
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2012.07.016