منابع مشابه
An Extraordinary Josephson Junction
The combination of symmetry breaking effects, such as those occurring in magnets and superconductors, with topological order may result in remarkable new physics. Recent theoretical studies suggest that, in certain superconductors, exotic quasiparticle excitations can emerge that behave like Majorana fermions, chargeneutral quasiparticles that are their own antiparticles. In Physical Review Let...
متن کاملCritical Behavior of Josephson-junction Arrays at F = 1/2
The critical behavior of frustrated Josephson-junction arrays at f = 1/2 flux quantum per plaquette is considered. Results from Monte Carlo simulations and transfer matrix computations support the identification of the critical behavior of the square and triangular classical arrays and the onedimensional quantum ladder with the universality class of the XY -Ising model. In the quantum ladder, t...
متن کاملResistance of Josephson Junction Arrays at Low Temperatures
We study motion of vortices in arrays of Josephson junctions at zero temperature where it is controlled by quantum tunneling from one plaquette to another. The tunneling process is characterized by a finite time and can be slow compared to the superconducting gap (so that τ∆ >> 1). The dissipation which accompanies this process arises from rare processes when a vortex excites a quasiparticle ab...
متن کاملVortex reflection at boundaries of Josephson-junction arrays.
We study the propagation properties of a single vortex in square Josephsonjunction arrays (JJA) with free boundaries and subjected to an applied dc current. We model the dynamics of the JJA by the resistively and capacitively shunted junction (RCSJ) equations. For zero Stewart-McCumber parameter βc we find that the vortex always escapes from the array when it gets to the boundary. For βc ≥ 2.5 ...
متن کاملDuality in Josephson Junction Arrays
Various properties of mesoscopic two-dimensional Josephson junction arrays are reviewed. Particular attention is paid to structure of the topological excitations, charges and vortices, which are shown to be dual to each other. This duality persists in the presence of external magnetic fields and offset charges, which influence vortices and charges in an equivalent way. A double-layer junction a...
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ژورنال
عنوان ژورنال: Advances in Condensed Matter Physics
سال: 2018
ISSN: 1687-8108,1687-8124
DOI: 10.1155/2018/1618252