625 research outputs found

    Proximity-reduced range of internal phase differences in double Josephson junctions with closely spaced interfaces

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    A substantial influence of the proximity and pair breaking effects on the range of internal phase differences is shown to take place in symmetric double Josephson junctions with closely spaced interfaces and to affect the evolution of the supercurrent j with the changing central lead's length L. If the phase difference phi between the external leads is controlled and L exceeds a few coherence lengths, the regime of interchanging modes is established. The range of the phase differences across the two individual interfaces is reduced with decreasing L, and the states of the higher energy mode are gradually eliminated. With a further decrease of L the regime of interchanging modes is destroyed along with the asymmetric mode. The conventional single junction current-phase relation j(phi) is eventually established and the condensate states' doubling is fully removed at very small L.Comment: 8 pages, 4 figures, published versio

    Hydrodynamics and evaporation of a sessile drop of capillary size

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    Fluid dynamics video of an evaporating sessile drop of capillary size is presented. The corresponding simulation represents the description taking into account jointly time dependent hydrodynamics, vapor diffusion and thermal conduction in an evaporating sessile drop. The fluid convection in the drop is driven by Marangoni forces associated with the temperature dependence of the surface tension. For the first time the evolution of the vortex structure in the drop during an evaporation process is obtained.Comment: APS/DFD Gallery of fluid motion 201

    RNGSSELIB: Program library for random number generation. More generators, parallel streams of random numbers and Fortran compatibility

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    In this update, we present the new version of the random number generator (RNG) library RNGSSELIB, which, in particular, contains fast SSE realizations of a number of modern and most reliable generators \cite{RNGSSELIB1}. The new features are: i) Fortran compatibility and examples of using the library in Fortran; ii) new modern and reliable generators; iii) the abilities to jump ahead inside RNG sequence and to initialize up to 101910^{19} independent random number streams with block splitting method.Comment: 6 pages, 1 tabl
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