24,212 research outputs found
Superconducting Vortices induced Periodic Magnetoresistance Oscillations in Single Crystal Au Nanowires
We show in this paper that it is possible to induce superconducting vortices
in a gold nanowire connected to superconducting electrodes. The gold nanowire
acquires superconductivity by the proximity effect. The differential
magnetoresistance of the nanowire beyond a critical magnetic field shows
uniform oscillations with increasing field with a period of \phi0/(2\pir^2)
(\phi0 = h/2e is the superconducting flux quantum, r = 35 nm is the radius of
the nanowire). We demonstrate that these periodic oscillations are the
signatures of the sequential generation and moving of vortices across the gold
nanowire
Locating influential nodes via dynamics-sensitive centrality
With great theoretical and practical significance, locating influential nodes
of complex networks is a promising issues. In this paper, we propose a
dynamics-sensitive (DS) centrality that integrates topological features and
dynamical properties. The DS centrality can be directly applied in locating
influential spreaders. According to the empirical results on four real networks
for both susceptible-infected-recovered (SIR) and susceptible-infected (SI)
spreading models, the DS centrality is much more accurate than degree,
-shell index and eigenvector centrality.Comment: 6 pages, 1 table and 2 figure
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