NiCu-based superconducting devices: Fabrication and characterization (Contributo in atti di convegno)

Type
Label
  • NiCu-based superconducting devices: Fabrication and characterization (Contributo in atti di convegno) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • Ruotolo A., Pullini D., Adamo P., Pepe G.P., Maritato L., Innocenti G., Perlo P. (2005)
    NiCu-based superconducting devices: Fabrication and characterization
    in 7th European Conference on Applied Superconductivity (EUCAS '05) , 11–15 September 2005, Vienna
    (literal)
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  • Ruotolo A., Pullini D., Adamo P., Pepe G.P., Maritato L., Innocenti G., Perlo P. (literal)
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  • in Journal of Physics: Conference Series 43 (2006) 1081–1087 (literal)
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  • Abstract. The critical Josephson current (IC) in superconducting/ferromagnetic (S/F) multilayer-based junctions can be controlled by changing the relative directions of the magnetization in the F-layers. Recent experimental works [1, 2] show that an enhancement of IC is achieved in S/F weak links when the alternating F-layers are antiparallel aligned. We present preliminary experimental results concerning the dependence of IC on the relative orientation of the ferromagnetic layers in S/F1/I/F2/S tunnel junctions where the F-layers are obtained by changing the relative composition of NiCu alloys. The multilayers were grown by electron beam deposition, and processed by Focused Ion Beam lithography. The magnetic state of the devices was directly determined by measuring the current perpendicular to plane (CPP) magnetoresistance (MR) at high bias. IC was found to be larger when the F-layers are antiparallel aligned. The maximum change of IC corresponds to the maximum change of MR. The application of a magnetic field induces a transition in the shape of the currentvoltage curve that seems to suggest Coulomb blockade effect. (literal)
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  • Università di Napoli Federico II, Dip. Scienze Fisiche, Facoltà d'Ingegneria, P.le Tecchio 80, 80125 Napoli, Italy Centro Ricerche FIAT, Strada Torino 50, 10043 Orbassano, Torino, Italy Università di Salerno, Dip. Scienze Fisiche, Via S. Allende 1, 84081 Baronissi, Salerno, Italy INFM-Coherentia, via Cintia, 80126, Napoli, Italy (literal)
Titolo
  • NiCu-based superconducting devices: Fabrication and characterization (literal)
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