Superconductor-insulator crossover in Josephson junction arrays due to reduction from two to one dimension
Yamaguchi Takahide, Hisao Miyazaki, Youiti Ootuka
DOI 10.1103/PhysRevB.73.224503 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We investigated the dimensionality effect on electrical properties of small-capacitance Josephson junction arrays (JJAs). A one-dimensional JJA and several two-dimensional JJAs with different array widths were fabricated on a substrate simultaneously so that they would have nominally the same junction parameters. As the array width decreases, the current-voltage characteristics show a crossover from a superconducting behavior with a dc Josephson-current-like branch to an insulating one with a Coulomb blockade gap of Cooper pairs. The superconductor-insulator crossover is explained in terms of enhanced quantum fluctuations of superconducting phase variables due to a dimensional reduction.
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. | 1.4 | Pressure not reported | onset |
Similar papers
Field-induced superconductor-to-insulator transitions in Josephson-junction arrays
similarity 0.97H. S. J. van der Zant et al.
Source status unknown — claims are unverified
Scaling behavior of the magnetic-field-tuned superconductor-insulator transition in two-dimensional Josephson-junction arrays
similarity 0.96C. D. Chen et al.
Source status unknown — claims are unverified
Transparent Semiconductor-Superconductor Interface and Induced Gap in an Epitaxial Heterostructure Josephson Junction
similarity 0.95M. Kjaergaard et al.
Source status unknown — claims are unverified
Enhanced Josephson coupling in hybrid nanojunctions
similarity 0.95Domenico Montemurro et al.
Source status unknown — claims are unverified
Charge solitons and quantum fluctuations in two-dimensional arrays of small Josephson junctions
similarity 0.95P. Delsing et al.
Source status unknown — claims are unverified
Charging effects and quantum coherence in regular Josephson junction arrays
similarity 0.95L. J. Geerligs et al.
Source status unknown — claims are unverified