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Proceedings Paper

Periodic and aperiodic superconducting microstructures
Author(s): John B. Ketterson; P. R. Auvil; D. J. Morgan; Stevan R. Maglic; Christopher D. Thomas; Ivan P. Nevirkovets
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Paper Abstract

We summarize some recent activities of our group involving e-beam and optically patterned, Nb-based, superconducting nanostructures, as well as related computer modeling studies. The devices described are i) Fiske cavities buried in a Nb base layer and driven by an overlying Nb/AlOx/Nb Josephson oscillator junction, ii) Nb/AlOx/Al/AlOx/Nb five-layer double junctions which Maezava and Shoji have observed to perform as nonhysteretic SNS Josephson single junctions, and iii) critical current measurements on e-beam patterned, 2D arrays of periodic and aperiodic ferromagnetic Ni 'dots' embedded in a Nb film. We also describe a method of 'base-electrode planarization' leading to more uniform junction formation. The computer modeling studies involve the stable and unstable solution states in a static magnetic field of current-biased single and double Josephson junctions.

Paper Details

Date Published: 9 December 1998
PDF: 11 pages
Proc. SPIE 3480, Superconducting Superlattices II: Native and Artificial, (9 December 1998); doi: 10.1117/12.332443
Show Author Affiliations
John B. Ketterson, Northwestern Univ. (United States)
P. R. Auvil, Northwestern Univ. (United States)
D. J. Morgan, Northwestern Univ. (United States)
Stevan R. Maglic, Northwestern Univ. (United States)
Christopher D. Thomas, Northwestern Univ. (United States)
Ivan P. Nevirkovets, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 3480:
Superconducting Superlattices II: Native and Artificial
Ivan Bozovic; Davor Pavuna, Editor(s)

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