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Tunnel spectroscopy in Nb/BiSCCO point contact junctions

1989; IEEE Magnetics Society; Volume: 25; Issue: 2 Linguagem: Inglês

10.1109/20.92456

1941-0069

A. Barone, A. Di Chiara, F. Fontana, G. Paternò, L. Maritato, G. Peluso, Giovanni Piero Pepe, U. Scotti di Uccio,

Advanced Chemical Physics Studies

Results concerning Nb/BiSCCO point contact junctions (PCJs) are presented. I-V (current voltage) and (dV/dI)-V measurements were performed at various temperatures and contact pressures. Differential resistance measurements performed by a standard modulation technique exhibits structures which can be related to the energy gap of BiSCCO. Features of the derivative plots are discussed in connection with models proposed previously for similar junctions. Nb-Nb PCJs based on sintered pellets of granular Nb have been investigated for comparison. >