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Sharp Superconductor-Insulator Transition in Short Wires

Meidan, Dganit and Oreg, Yuval and Refael, Gil (2007) Sharp Superconductor-Insulator Transition in Short Wires. Physical Review Letters, 98 (18). Art. No. 187001. ISSN 0031-9007. doi:10.1103/PhysRevLett.98.187001.

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Recent experiments on short MoGe nanowires show a sharp superconducting-insulating transition at the universal resistance RQ=h/(4e^2), contrary to the expectation of a smooth temperature dependence of the resistance for such Josephson-like systems. We present a self-consistent renormalization-group treatment of interacting quantum phase slips in short superconducting wires, which reproduces this sharp universal transition. Our method should also apply to other systems in the sine-Gordon universality class, in the previously inaccessible intermediate-coupling regime.

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Additional Information:©2007 The American Physical Society (Received 28 November 2006; published 1 May 2007) We thank E. Demler, R.A. Smith, and P. Werner. Special thanks to A. Bezryadin for making his data available to us. This study was supported by a DIP H.2.1 grant.
Subject Keywords:Quantum wires
Issue or Number:18
Record Number:CaltechAUTHORS:MEIprl07
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8288
Deposited By: Archive Administrator
Deposited On:02 Aug 2007
Last Modified:08 Nov 2021 20:49

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