Quantum Fluctuations in Thin Superconducting Wires of Finite Length
H. P. Büchler, V. B. Geshkenbein, G. Blatter
DOI 10.1103/PhysRevLett.92.067007 · Physical Review Letters
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Abstract
In one-dimensional wires, fluctuations destroy superconducting long-range order and stiffness at finite temperatures; in an infinite wire, quasi-long-range order and stiffness survive at zero temperature if the wire’s dimensionless admittance μ is large, μ>2. We analyze the disappearance of this superconductor-insulator quantum phase transition in a finite wire and its resurrection due to the wire’s coupling to its environment characterized through the dimensionless conductance K.
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