Charging effects and quantum coherence in regular Josephson junction arrays
L. J. Geerligs, M. Peters, L. E. M. de Groot, A. Verbruggen, J. E. Mooij
DOI 10.1103/PhysRevLett.63.326 · Physical Review Letters
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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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.37 | Pressure not reported | unknown |
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