Work

Field-induced superconductor-to-insulator transitions in Josephson-junction arrays

Year: 1992

Type: article

Abstract: We have studied phase transitions in fabricated 2D arrays of Josephson junctions where the charging and Josephson coupling energies are about equal. We find a crossover from superconducting behavior in low fields to insulating behavior for fields above a critical value of 0.1--0.2 flux quanta per unit cell. The quantitative aspects agree well with predictions from a recent theory for quantum vortex motion by M. P. A. Fisher and with measurements on films. Similar transitions are found around values f=n/m, where f is the flux per cell and n,m=1,2,3. The field dependence is periodic in f with period 1.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.69.2971

Authors: H. S. J. van der Zant, F. C. Fritschy, W. J. Elion, L. J. Geerligs, J. E. Mooij

Institution: Delft University of Technology

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2041743897

FWCI: 5.438

Cites: 15

Cited by: 182

Related to: 10