Dynamical study of the superconducting phase transition of two-dimensional networks

Author

Jeanneret, B. ; Flückiger, Ph ; Leemann, Ch. ; Martinoli, P.

Author_Institution

Inst. de Phys., Neuchatel Univ., Switzerland

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

1428

Lastpage

1431

Abstract

Granular aluminum wire networks forming square arrays of N×N≃10⁶ nodes connected by strips of 8-μm long were fabricated with photolithographic techniques. For strip resistances of the order of 1 kΩ the superconducting transition of the network, as evidenced by AC conductance measurements is shown to be of the Kosterlitz-Thouless type. In a perpendicular magnetic field, flux quantization in the loops of the network leads to periodic oscillations of the magnetoconductance

Keywords

aluminium; critical phenomena; magnetic field effects; superconducting devices; type I superconductors; 1 kohm; AC conductance measurements; Kosterlitz-Thouless type; critical behaviour; flux quantization; granular Al wire networks; magnetoconductance; periodic oscillations; perpendicular magnetic field; photolithographic techniques; square arrays; strip resistances; superconducting periodic wire networks; superconducting phase transition; superconducting-to-normal transition; two-dimensional networks; Aluminum; Couplings; Granular superconductors; High temperature superconductors; Josephson junctions; Lattices; Magnetic field measurement; Strips; Superconducting filaments and wires; Superconducting materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92564

Filename

92564