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Superconductor to normal-metal transition in finite-length nanowires: phenomenological model

Refael, Gil and Demler, Eugene and Oreg, Yuval (2009) Superconductor to normal-metal transition in finite-length nanowires: phenomenological model. Physical Review B, 79 (9). 094524. ISSN 0163-1829. doi:10.1103/PhysRevB.79.094524.

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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 normal fluid only couples to the superconductor fluid through the leads at the edges of the wire, and the 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_(tot)=R_Q=h/4e^2.

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Additional Information:© 2009 The American Physical Society. Received 21 November 2008; published 27 March 2009. The authors thank D. S. Fisher, who collaborated with them on much of the reported research. They also thank A. Bezryadin, A. Bollinger, P. Goldbart, B. I. Halperin, D. Meidan, D. Podolsky, and D. Shahar for many helpful discussions. G.R. thanks the Technion ITP and the Weizmann Institute for their generous hospitality. Y.O. acknowledges support of the ISF. PACS number(s): 74.81.Fa, 74.78.Na.
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Israeli Science Foundation (ISF)UNSPECIFIED
Subject Keywords:electrical resistivity; nanowires; superconducting transitions
Issue or Number:9
Record Number:CaltechAUTHORS:20090702-094821436
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14487
Deposited By: Tony Diaz
Deposited On:12 Aug 2009 21:00
Last Modified:08 Nov 2021 23:12

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