1. Aluminum-ferromagnetic Josephson tunnel junctions for high quality magnetic switching devices.
- Author
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Vettoliere, A., Satariano, R., Ferraiuolo, R., Di Palma, L., Ahmad, H. G., Ausanio, G., Pepe, G. P., Tafuri, F., Montemurro, D., Granata, C., Parlato, L., and Massarotti, D.
- Subjects
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JOSEPHSON junctions , *MAGNETIC control , *MAGNETIC devices , *ALUMINUM electrodes , *DIGITAL technology , *SUPERCONDUCTING circuits - Abstract
The competition between superconducting and ferromagnetic orderings in Josephson devices has promoted fundamental and applicative studies of high impact for superconducting digital technology, cryogenic memories, and spintronics, where the possibility of switching between different magnetic states is a crucial advantage. Here, we report on fabrication and characterization of very high quality tunnel ferromagnetic Josephson junctions (JJs) with aluminum electrodes, demonstrating hysteretic behavior of the magnetic field pattern preserving typical transport properties of Al junctions, underdamped behavior, and very low quasiparticle dissipation. The proposed technology paves the way for the possible implementation of Al tunnel-ferromagnetic JJs in superconducting quantum circuits, toward alternative approaches based on digital control of the Josephson device. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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