Ferromagnetic Josepshon junctions (SFS JJs) are the basic cell of an intense research activity that extends to spintronics. The simultaneous presence of low-dissipative behavior and spin-filtering properties in JJs composed of ferro-insulating barriers (SIfS JJs) suggests their possible implementation in dissipationless versions of spintronics devices. Here, we establish a direct correlation between the suppression of the critical current in the experimental I–V curves of SIfS JJs and the spin-polarization factor derived in terms of the tunneling amplitudes for spin up and down carriers. A modelling of the JJs in terms of the Tunnel Junction Microscopic model allows to provide the scaling of the suppression parameter as a function of the barrier thickness.

Critical Current Suppression in Spin-Filter Josephson Junctions / Ahmad, H. G.; Di Palma, L.; Caruso, R.; Pal, A.; Pepe, G. P.; Blamire, M. G.; Tafuri, F.; Massarotti, D.. - In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM. - ISSN 1557-1939. - (2020). [10.1007/s10948-020-05577-0]

Critical Current Suppression in Spin-Filter Josephson Junctions

Ahmad H. G.
;
Di Palma L.;Caruso R.;Pepe G. P.;Tafuri F.;Massarotti D.
2020

Abstract

Ferromagnetic Josepshon junctions (SFS JJs) are the basic cell of an intense research activity that extends to spintronics. The simultaneous presence of low-dissipative behavior and spin-filtering properties in JJs composed of ferro-insulating barriers (SIfS JJs) suggests their possible implementation in dissipationless versions of spintronics devices. Here, we establish a direct correlation between the suppression of the critical current in the experimental I–V curves of SIfS JJs and the spin-polarization factor derived in terms of the tunneling amplitudes for spin up and down carriers. A modelling of the JJs in terms of the Tunnel Junction Microscopic model allows to provide the scaling of the suppression parameter as a function of the barrier thickness.
2020
Critical Current Suppression in Spin-Filter Josephson Junctions / Ahmad, H. G.; Di Palma, L.; Caruso, R.; Pal, A.; Pepe, G. P.; Blamire, M. G.; Tafuri, F.; Massarotti, D.. - In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM. - ISSN 1557-1939. - (2020). [10.1007/s10948-020-05577-0]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/814595
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