Dynamics of point Josephson junctions in a microstrip line

We model the dynamics of point Josephson junctions in a 1D microstrip line using a wave equation with delta distributed sine non-linearities. The model is suitable for both low T c and high- T c systems (0 and π junctions). For a single junction in the line, we found two limiting behaviors: the ohmi...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2005-09, Vol.425 (3), p.69-89
Main Authors: Caputo, J.G., Loukitch, L.
Format: Article
Language:English
Subjects:
Applied sciences
Electronics
Exact sciences and technology
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Superconducting devices
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Summary:We model the dynamics of point Josephson junctions in a 1D microstrip line using a wave equation with delta distributed sine non-linearities. The model is suitable for both low T c and high- T c systems (0 and π junctions). For a single junction in the line, we found two limiting behaviors: the ohmic mode where the junction acts as a pure resistor which stops waves and separates the cavity and the junction mode where the wave is homogeneous throughout the strip. This classification allows to bound the I– V curves of the system. Two junctions in a strip give generally ohmic modes and combined junction/ohmic modes and yield information about the behavior of an array with many junctions. Finally, we use this analysis to understand the many junction case for 0 and π junctions and the effect of an external magnetic field.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2005.06.005