Eur. Phys. J. B 40, 209-215 (2004)
https://doi.org/10.1140/epjb/e2004-00259-9

Interaction between a BSCCO-type intrinsic Josephson junction and a microwave cavity

¹ Oersted-DTU, Section of Electric Power Engineering, The Technical University of Denmark, 2800 Lyngby, Denmark
² INFM/Coherentia and Dept. of Biological and Environmental Sciences, University of Sannio, Via Port'Arsa 11, 82100 Benevento, Italy

Corresponding author: ^a filatrella@unisannio.it

Received: 9 March 2004
Revised: 6 June 2004
Published online: 12 August 2004

Abstract

The electrical behavior of anisotropic BSCCO single crystals is modeled by mutually coupled long Josephson junctions. We show that although the fluxons in the different layers do not a priori prefer the in-phase motion desired for many potential applications it is possible to induce such behavior by coupling the system to a high-Q resonator with a resonance frequency corresponding to fluxon in-phase motion. The resulting model is a set of coupled non-linear partial differential equations. By direct numerical simulations we have demonstrated that the qualitative behavior of the combined stacked long Josephson junctions and cavity system can be understood on the basis of the general concepts of nonlinear oscillators interacting with a resonator. For some region of the parameter space it is possible to reach the desired synchronous state, making the system potentially suitable for applications. We also look at the different dynamical states defined by different fluxon dynamical states in combination with different cavity properties.