In Magnetic Josephson Junctions (MJJs) based on Superconductor-Insulator-Superconductor-Ferromagnet-Superconductor (SIS'FS), we provide evidence of an unconventional magnetic field behavior of the critical current characterized by an inverted magnetic hysteresis, i.e., an inverted shift of the whole magnetic field pattern when sweeping the external field. By thermoremanence measurements of S/F/S trilayers, we have ruled out that this uncommon behavior could be related to the F-stray fields. In principle, this finding could have a crucial role in the design and proper functioning of scalable cryogenic memories.
Unconventional magnetic hysteresis of the Josephson supercurrent in magnetic Josephson Junctions / Satariano, R.; Parlato, L.; Caruso, R.; Ahmad, H. G.; Miano, A.; Di Palma, L.; Salvoni, D.; Montemurro, D.; Tafuri, F.; Pepe, G. P.; Massarotti, D.; Ausanio, G.; Vettoliere, A.; Granata, C.; Lamura, G.. - (2021), pp. 1-4. (Intervento presentato al convegno 14th IEEE Workshop on Low Temperature Electronics, WOLTE 2021 tenutosi a ita nel 2021) [10.1109/WOLTE49037.2021.9555441].
Unconventional magnetic hysteresis of the Josephson supercurrent in magnetic Josephson Junctions
Satariano R.
;Parlato L.;Caruso R.;Ahmad H. G.;Miano A.;Di Palma L.;Salvoni D.;Montemurro D.;Tafuri F.;Pepe G. P.;Massarotti D.;Ausanio G.;
2021
Abstract
In Magnetic Josephson Junctions (MJJs) based on Superconductor-Insulator-Superconductor-Ferromagnet-Superconductor (SIS'FS), we provide evidence of an unconventional magnetic field behavior of the critical current characterized by an inverted magnetic hysteresis, i.e., an inverted shift of the whole magnetic field pattern when sweeping the external field. By thermoremanence measurements of S/F/S trilayers, we have ruled out that this uncommon behavior could be related to the F-stray fields. In principle, this finding could have a crucial role in the design and proper functioning of scalable cryogenic memories.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
