Spatiotemporal Stochastic Resonance in Fully Frustrated Josephson Ladders

Abstract

We consider a Josephson-junction ladder in an external magnetic field with half flux quantum per plaquette. When driven by external currents, periodic in time and staggered in space, such a fully frustrated system is found to display spatiotemporal stochastic resonance under the influence of thermal noise. Such resonance behavior is investigated both numerically and analytically, which reveals significant effects of anisotropy and yields rich physics.

8 pages in two columns, 8 figures, to appear in Phys. Rev. B