Length-Scale Dependence of the Superconductor-to-Insulator Quantum Phase Transition in One Dimension

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.81.204· OSTI ID:638809

Chow, E; Delsing, P ^[1]; Haviland, D B ^[2]

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1. Department of Microelectronics and Nanoscience, Chalmers University of Technology and Goeteborg University, S-412 96, Goeteborg (Sweden)
2. Department of Physics, Royal Institute of Technology, S-100 44 Stockholm (Sweden)

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. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 638809
• Journal Information: Physical Review Letters, Vol. 81, Issue 1; Other Information: PBD: Jul 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
JOSEPHSON EFFECT
SUPERCONDUCTING JUNCTIONS
JOSEPHSON JUNCTIONS
COOPER PAIRS
PHASE TRANSFORMATIONS
SQUID DEVICES
ELECTRIC IMPEDANCE