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Extreme multistability in a Josephson-junction-based circuit

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Author(s):
Louodop, Patrick ; Tchitnga, Robert ; Fagundes, Fernando F. ; Kountcho, Michaux ; Tamba, V. Kamdoun ; Pando L, Carlos L. ; Cerdeira, Hilda A.
Total Authors: 7
Document type: Journal article
Source: PHYSICAL REVIEW E; v. 99, n. 4, p. 5-pg., 2019-04-18.
Abstract

We design and report an electrical circuit using a Josephson junction under periodic forcing that reveals extreme multistability. Its overall state equations surprisingly recall those of a well-known model of Josephson junction initially introduced in our circuit. The final circuit is characterized by the presence of two new and different current sources in parallel with the nonlinear internal current source sin[phi(t)] of the Josephson junction single electronic component. Furthermore, the model presents an interesting extreme multistability which is justified by a very large number of different attractors (chaotic or not) when slightly changing the initial conditions. (AU)

FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 14/13272-1 - Finite time synchronization of chaotic systems and applications
Grantee:Patrick Herve Louodop Fotso
Support Opportunities: Scholarships in Brazil - Post-Doctoral