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

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

993

Lastpage

996

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-BiSrCaCu₂O_x; 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92456

Filename

92456