Static semifluxons in a long Josephson junction with $\pi$ -discontinuity points

Susanto, H. and Gils van, S.A. and Visser, T.P.P. and Ariando and Smilde, H.J.H. and Hilgenkamp, H. (2003) Static semifluxons in a long Josephson junction with $\pi$ -discontinuity points. Physical Review B: Condensed matter and materials physics, 68 (10). p. 104501. ISSN 1098-0121

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Abstract:	We investigate analytically a long Josephson junction with several $\pi$ -discontinuity points characterized by a jump of $\pi$ in the phase difference of the junction. The system is described by a perturbed-combined sine-Gordon equation. Via phase-portrait analysis, it is shown how the existence of static semifluxons localized around the discontinuity points is influenced by the applied bias current. In junctions with more than one corner, there is a minimum-facet-length for semifluxons to be spontaneously generated. A stability analysis is used to obtain the minimum-facet-length for multicorner junctions.
Item Type:	Article
Copyright:	© 2003 American Physical Society
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS) Science and Technology (TNW)
Research Group:	Applied Analysis and Mathematical Physics (AAMP)
Link to this item:	http://purl.utwente.nl/publications/68245
Official URL:	http://dx.doi.org/10.1103/PhysRevB.68.104501
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Static semifluxons in a long Josephson junction with -discontinuity points