Charging effects and quantum coherence in regular Josephson junction arrays

L.J. Geerligs; Mathijs Peters; L. E. M. de Groot; A. H. Verbruggen; J. E. Mooij

doi:10.1103/physrevlett.63.326

Abstract

Two-dimensional arrays of very-small-capacitance Josephson junctions have been studied. At low temperatures the arrays show a transition from superconducting to insulating behavior when the ratio of charging energy to Josephson-coupling energy exceeds the value 1. Insulating behavior coincides withthe occurrence of a charging gap inside the BCS gap, with an S-shaped I-V characteristic. This so far unobserved S shape is predicted to arise from macroscopic quantum coherent effects including Bloch oscillations.

Keywords

Josephson effectCondensed matter physicsSuperconductivityPi Josephson junctionPhysicsCoherence (philosophical gambling strategy)Superconducting tunnel junctionQuantumCapacitanceJosephson energyJosephson phaseCoherence lengthQuantum mechanics

Affiliated Institutions

Delft University of Technology NL

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Publication Info

Year: 1989
Type: article
Volume: 63
Issue: 3
Pages: 326-329
Citations: 243
Access: Closed

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APA Style

                            
                                
                                    L.J. Geerligs, 
                                
                                    Mathijs Peters, 
                                
                                    L. E. M. de Groot
                                
                                et al.
                            
                            (1989). 
                            Charging effects and quantum coherence in regular Josephson junction arrays. 
                            Physical Review Letters
                            , 63
                            (3)
                            , 326-329.
                            https://doi.org/10.1103/physrevlett.63.326
                        

Identifiers

DOI: 10.1103/physrevlett.63.326
PMID: 10041040

Data Quality

Data completeness: 77%