Periodic and aperiodic superconducting microstructures

John B. Ketterson; P. R. Auvil; D. J. Morgan; Stevan R. Maglic; Christopher D. Thomas; Ivan P. Nevirkovets

doi:10.1117/12.332443

9 December 1998 Periodic and aperiodic superconducting microstructures

John B. Ketterson, P. R. Auvil, D. J. Morgan, Stevan R. Maglic, Christopher D. Thomas, Ivan P. Nevirkovets

Proceedings Volume 3480, Superconducting Superlattices II: Native and Artificial; (1998) https://doi.org/10.1117/12.332443
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

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/AlO_x/Nb Josephson oscillator junction, ii) Nb/AlO_x/Al/AlO_x/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.

Citation Download Citation

John B. Ketterson, P. R. Auvil, D. J. Morgan, Stevan R. Maglic, Christopher D. Thomas, and Ivan P. Nevirkovets "Periodic and aperiodic superconducting microstructures", Proc. SPIE 3480, Superconducting Superlattices II: Native and Artificial, (9 December 1998); https://doi.org/10.1117/12.332443

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