Quantum phase slips in superconducting nanowires

Lau, C. N. and Markovic, N. and Bockrath, M. and Bezryadin, A. and Tinkham, M. (2001) Quantum phase slips in superconducting nanowires. Physical Review Letters, 87 (21). Art. No. 217003. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:LAUprl01

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Abstract

We have measured the resistance vs temperature of more than 20 superconducting nanowires with nominal widths ranging from 10 to 22 nm and lengths from 100 nm to 1 μm. With decreasing cross-sectional areas, the wires display increasingly broad resistive transitions. The data are in very good agreement with a model that includes both thermally activated phase slips close to Tc and quantum phase slips (QPS) at low temperatures, but disagree with an earlier model based on a critical value of Rn/Rq. Our measurements provide strong evidence for QPS in thin superconducting wires.

Item Type:	Article
Additional Information:	©2001 The American Physical Society. Received 9 May 2001; published 2 November 2001. We thank B. I. Halperin and E. Demler for helpful discussions, S. Shepard for assistance with fabrication, and R. Smalley for providing the nanotubes. This work is supported by NSF Grants No. DMR-00-72618, No. DMR-98-0936, No. PHY-98-71810, and ONR Grant No. N00014-96-0108.
Subject Keywords:	CARBON NANOTUBES; ONE-DIMENSION; WIRES; FLUCTUATIONS; SUPPRESSION
Record Number:	CaltechAUTHORS:LAUprl01
Persistent URL:	http://resolver.caltech.edu/CaltechAUTHORS:LAUprl01
Alternative URL:	http://dx.doi.org/10.1103/PhysRevLett.87.217003
Usage Policy:	No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:	5665
Collection:	CaltechAUTHORS
Deposited By:	Lindsay Cleary
Deposited On:	27 Oct 2006
Last Modified:	26 Dec 2012 09:14

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