Superconductor-To-Normal Transition In Finite Nanowires

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Superconductor-To-Normal Transition In Finite Nanowires

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Title: Superconductor-To-Normal Transition In Finite Nanowires
Author: Refael, Gil; Oreg, Yuval; Demler, Eugene A.

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Citation: Refael, Gil, Eugene Demler, and Yuval Oreg. 2009. Superconductor-to-normal transition in finite nanowires. Physical Review B.
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Abstract: In this paper we discuss the interplay of quantum fluctuations and dissipation in uniform superconducting nanowires. We consider a phenomenological model with superconducting and normal components, and a finite equilibration rate between these two-fluids. We find that phase-slip dipoles proliferate in the wire, and decouple the two-fluids within its bulk. This implies that the the normal fluid only couples to the superconductor fluid through the leads at the edges of the wire, and the {\it local} dissipation is unimportant. Therefore, while long wires have a superconductor-metal transition tuned by local properties of the superconducting fluid, short wires have a transition when the total resistance is \(R_{total}\) = \(R_{Q}\) = \(h/4e^{2}\).
Published Version: doi://10.1103/PhysRevB.79.094524
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