Title :
Tunnel spectroscopy in Nb/BiSCCO point contact junctions
Author :
Barone, A. ; Chiara, A. Di ; Fontana, F. ; Paternò, G. ; Maritato, L. ; Peluso, G. ; Pepe, G. ; Di Uccio, U. Scotti
Author_Institution :
Dipartimento di Sci. Fisiche, Napoli Univ., Italy
fDate :
3/1/1989 12:00:00 AM
Abstract :
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
Keywords :
bismuth compounds; calcium compounds; high-temperature superconductors; niobium; strontium compounds; superconducting energy gap; superconductive tunnelling; tunnelling spectroscopy; I-V measurements; Nb-BiSrCaCu2Ox; contact pressures; differential resistance measurements; energy gap; high temperature superconductors; point contact junctions; sintered pellets; standard modulation technique; Electrical resistance measurement; Electrons; Laboratories; Measurement standards; Niobium; Performance evaluation; Spectroscopy; Superconductivity; Tunneling; Yttrium barium copper oxide;
Journal_Title :
Magnetics, IEEE Transactions on
