Scaling Analysis of Magnetic-Field-Tuned Phase Transitions in One-Dimensional Josephson Junction Arrays
Watson Kuo, C. D. Chen
DOI 10.1103/PhysRevLett.87.186804 · Physical Review Letters
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Abstract
We have studied the magnetic-field-induced superconductor-insulator quantum phase transition in one-dimensional arrays of small Josephson junctions. We found that the critical magnetic field that separates the two phases corresponds to the onset of Coulomb blockade of Cooper pairs tunneling in the current-voltage characteristics. The resistance data are analyzed in the context of the superfluid-insulator transition in one dimension, and a finite-temperature scaling analysis is performed to extract the critical exponents. The dynamical exponents z are determined to be close to 1, and the correlation length exponents ν are found to be approximately 0.3 and 0.45 in the two groups of measured samples.
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. | — | Pressure not reported | unknown |
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