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Title: Normal-metal--insulator--superconductor tunnel-junction study of the magnetic field dependence of superconducting thin films

Abstract

Measurements of the orientational and field dependence of normal-metal--insulator--superconductor tunnel junctions have been carried out on superposed Al-Al/sub 2/O/sub 3/-Pb thin films. The experimental results are the subject of a theoretical discussion based on a variational solution of the Ginzburg-Landau free-energy expression for a superconducting film in the presence of an applied magnetic field of arbitrary intensity, whose orientation with respect to the surface of the film makes an angle theta. We derive a general expression for the tunnel characteristics which, near the transition, is in agreement with Tinkham's formula for the upper critical field H/sub c/(theta).

Authors:
; ;
Publication Date:
Research Org.:
Physique des Solides, Campus de la Plaine CP 233, Universite Libre de Bruxelles, 1050-Brussels, Belgium
OSTI Identifier:
7084424
Resource Type:
Journal Article
Journal Name:
Phys. Rev., B; (United States)
Additional Journal Information:
Journal Volume: 16:7
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM; MAGNETIC FIELDS; ALUMINIUM OXIDES; LEAD; SUPERCONDUCTING JUNCTIONS; GINZBURG-LANDAU THEORY; SUPERCONDUCTING FILMS; VARIATIONAL METHODS; ALUMINIUM COMPOUNDS; CHALCOGENIDES; ELEMENTS; FILMS; METALS; OXIDES; OXYGEN COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties; 656102 - Solid State Physics- Superconductivity- Acoustic, Electronic, Magnetic, Optical, & Thermal Phenomena- (-1987)

Citation Formats

Gusman, G, Thomas, J F, and Deltour, R. Normal-metal--insulator--superconductor tunnel-junction study of the magnetic field dependence of superconducting thin films. United States: N. p., 1977. Web. doi:10.1103/PhysRevB.16.3165.
Gusman, G, Thomas, J F, & Deltour, R. Normal-metal--insulator--superconductor tunnel-junction study of the magnetic field dependence of superconducting thin films. United States. https://doi.org/10.1103/PhysRevB.16.3165
Gusman, G, Thomas, J F, and Deltour, R. 1977. "Normal-metal--insulator--superconductor tunnel-junction study of the magnetic field dependence of superconducting thin films". United States. https://doi.org/10.1103/PhysRevB.16.3165.
@article{osti_7084424,
title = {Normal-metal--insulator--superconductor tunnel-junction study of the magnetic field dependence of superconducting thin films},
author = {Gusman, G and Thomas, J F and Deltour, R},
abstractNote = {Measurements of the orientational and field dependence of normal-metal--insulator--superconductor tunnel junctions have been carried out on superposed Al-Al/sub 2/O/sub 3/-Pb thin films. The experimental results are the subject of a theoretical discussion based on a variational solution of the Ginzburg-Landau free-energy expression for a superconducting film in the presence of an applied magnetic field of arbitrary intensity, whose orientation with respect to the surface of the film makes an angle theta. We derive a general expression for the tunnel characteristics which, near the transition, is in agreement with Tinkham's formula for the upper critical field H/sub c/(theta).},
doi = {10.1103/PhysRevB.16.3165},
url = {https://www.osti.gov/biblio/7084424}, journal = {Phys. Rev., B; (United States)},
number = ,
volume = 16:7,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 1977},
month = {Sat Oct 01 00:00:00 EDT 1977}
}