A pronounced resonance-like structure has been observed in the current dependence of AC susceptibility for two-dimensional array of unshunted Nb-Alx-Nb Josephson junctions. Using a single-plaquette approximation, we were able to successfully fit our data assuming that resonance structure is related to the geometric (inductive) properties of the array.
Bibliographical noteFunding Information:
We are very grateful to R.S. Newrock, P. Barbara and C.J. Lobb for helpful discussions and for providing high quality SIS samples. This work has been financially supported by the Brazilian agencies CNPq, CAPES and FAPESP.
- AC susceptibility
- Inductance related effect
- Josephson junction array