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Start Over Author "Montemurro D" Journal applied physics letters
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4. Aluminum-ferromagnetic Josephson tunnel junctions for high quality magnetic switching devices

Author

A. Vettoliere, R. Satariano, R. Ferraiuolo, L. Di Palma, H. G. Ahmad, G. Ausanio, G. P. Pepe, F. Tafuri, D. Montemurro, C. Granata, L. Parlato, D. Massarotti, 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
Physics and Astronomy (miscellaneous), Quantum computing, Quasiparticle, Current-voltage characteristic, Superconducting devices, Spintronics, Transport properties
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.

Published
2022

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