Length-Scale Dependence of the Superconductor-to-Insulator Quantum Phase Transition in One Dimension
Edmond Chow, Per Delsing, David B. Haviland
DOI 10.1103/PhysRevLett.81.204 · Physical Review Letters
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Abstract
One-dimensional (1D) arrays of small-capacitance Josephson junctions demonstrate a sharp transition, from Josephson-like behavior to the Coulomb blockade of Cooper-pair tunneling, as the effective Josephson coupling between nearest neighbors is tuned with an externally applied magnetic field. Comparing the zero-bias resistance of three arrays with 255, 127, and 63 junctions, we observe a critical behavior where the resistance, extrapolated to T=0, is independent of length at a critical magnetic field. Comparison is made with a theory of this T=0 quantum phase transition, which maps to the 2D classical XY model.
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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