Analysis of a Fractal Josephson Junction with Unharmonic Current-Phase Relation
Journal Article
·
· Journal of Superconductivity and Novel Magnetism
- University of Bamenda, Department of Physics, Higher Teacher Training College (Cameroon)
- University of Dschang, Department of Telecommunication and Network Engineering, IUT-Fotso Victor of Bandjoun (Cameroon)
- Université d’Abomey-Calavi, Institut de Mathématiques et de Sciences Physiques (Benin)
In this paper, a fractal Josephson junction with unharmonic current-phase relation is analytically and numerically analyzed. This system has two, four, or no equilibrium points depending on the external direct current source and unharmonic parameter. The stability analysis of the equilibrium points is carried out. The inclusion of unharmonic current-phase relation in an ideal Josephson junction leads to an increase in the hysteresis of current-voltage characteristics. While the inclusion of fractal characteristics in insulating layer of Josephson junction with harmonic current-phase relation leads to a decrease in the hysteresis of current-voltage characteristics. The inclusion of unharmonic current-phase relation on a fractal Josephson junction leads to an increase in the hysteresis of current-voltage characteristics. The dynamical behavior map of fractal Josephson junction with unharmonic current-phase relation in amplitude and frequency of modulation current plane is depicted. For a suitable choice of modulation parameters of external current source, fractal Josephson junction with unharmonic current-phase relation can exhibit excitable mode, bistable oscillatory mode, and periodic and chaotic behaviors.
- OSTI ID:
- 22922964
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 8 Vol. 32; ISSN 1557-1939
- Country of Publication:
- United States
- Language:
- English
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