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Proceedings Paper

Studies of static and dynamic properties of multilayered (stacked) Josephson junctions
Author(s): Shenian N. Song; Stevan R. Maglic; Christopher D. Thomas; Edward D. Rippert; P. R. Auvil; Melville P. Ulmer; John B. Ketterson
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Paper Abstract

We have studied the static I-V characteristics and vortex dynamics in stacked Nb/AlOx/Nb Josephson junctions. In josephson junction stacks consisting of two junctions having identical maximum Josephson supercurrent Ic,Ic 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.

Paper Details

Date Published: 5 July 1996
PDF: 7 pages
Proc. SPIE 2697, Oxide Superconductor Physics and Nano-Engineering II, (5 July 1996); doi: 10.1117/12.250263
Show Author Affiliations
Shenian N. Song, Northwestern Univ. (United States)
Stevan R. Maglic, Northwestern Univ. (United States)
Christopher D. Thomas, Northwestern Univ. (United States)
Edward D. Rippert, Northwestern Univ. (United States)
P. R. Auvil, Northwestern Univ. (United States)
Melville P. Ulmer, Northwestern Univ. (United States)
John B. Ketterson, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 2697:
Oxide Superconductor Physics and Nano-Engineering II
Ivan Bozovic; Davor Pavuna, Editor(s)

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