Studies of static and dynamic properties of multilayered (stacked) Josephson junctions

Shenian N. Song; Stevan R. Maglic; Christopher D. Thomas; Edward D. Rippert; P. R. Auvil; Melville P. Ulmer; John B. Ketterson

doi:10.1117/12.250263

5 July 1996 Studies of static and dynamic properties of multilayered (stacked) Josephson junctions

Shenian N. Song, Stevan R. Maglic, Christopher D. Thomas, Edward D. Rippert, P. R. Auvil, Melville P. Ulmer, John B. Ketterson

Author Affiliations +

Proceedings Volume 2697, Oxide Superconductor Physics and Nano-Engineering II; (1996) https://doi.org/10.1117/12.250263
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

We have studied the static I-V characteristics and vortex dynamics in stacked Nb/AlO_x/Nb Josephson junctions. In josephson junction stacks consisting of two junctions having identical maximum Josephson supercurrent I_c,I_c versus H characteristics deviating from the Fraunhofer pattern have been observed, implying that a structural phase transformation to a triangular vortex lattice occurs with increasing H. Interjunction coupling leads to splitting of the Swihart mode; which manifest itself as Fisk steps with different voltage spacings. When subjected to microwave radiation, the I-V curves of the stacked Josephson junctions exhibit new features which are absent in single junctions.

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Shenian N. Song, Stevan R. Maglic, Christopher D. Thomas, Edward D. Rippert, P. R. Auvil, Melville P. Ulmer, and John B. Ketterson "Studies of static and dynamic properties of multilayered (stacked) Josephson junctions", Proc. SPIE 2697, Oxide Superconductor Physics and Nano-Engineering II, (5 July 1996); https://doi.org/10.1117/12.250263

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