CaltechAUTHORS
  A Caltech Library Service

Sharp superconductor–insulator transition in short wires

Meidan, Dganit and Oreg, Yuval and Refael, Gil and Smith, Robert A. (2008) Sharp superconductor–insulator transition in short wires. Physica C, 468 (4). pp. 341-349. ISSN 0921-4534. https://resolver.caltech.edu/CaltechAUTHORS:20100722-100915751

[img] PDF - Published Version
Restricted to Repository administrators only
See Usage Policy.

274Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20100722-100915751

Abstract

Recent experiments on short MoGe nanowires show a sharp superconductor–insulator transition tuned by the normal state resistance of the wire, with a critical resistance of R_c ≈ R_Q = h/(4e^2). These results are at odds with a broad range of theoretical work on Josephson-like systems that predicts a smooth transition, tuned by the value of the resistance that shunts the junction. We develop a self-consistent renormalization group treatment of interacting phase-slips and their dual counterparts, correlated cooper pair tunneling, beyond the dilute approximation. This analysis leads to a very sharp transition with a critical resistance of R_Q. The addition of the quasi-particles’ resistance at finite temperature leads to a quantitative agreement with the experimental results. This self-consistent renormalization group method should also be applicable to other physical systems that can be mapped onto similar sine-Gordon models, in the previously inaccessible intermediate-coupling regime.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.physc.2007.09.019DOIUNSPECIFIED
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVJ-4R2RMX7-C&_user=1010281&_coverDate=02%2F15%2F2008&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000050264&_version=1&_urlVersion=0&_userid=1010281&md5=078068d76ed1c3126cd350PublisherUNSPECIFIED
http://arxiv.org/abs/0711.1317arXivUNSPECIFIED
Additional Information:© 2007 Elsevier. Accepted 17 September 2007; Available online 6 November 2007. We thank E. Demler and P. Werner. Special thanks to A. Bezryadin for making his data available to us. This study was supported by a DIP grant and by an ISF grant.
Funders:
Funding AgencyGrant Number
DIP (Deutsch-Israelische Projektkooperation, Deutsche Forschungsgemeinschaft)UNSPECIFIED
ISF (Israel Science Foundation)UNSPECIFIED
Subject Keywords:Fluctuations; Superconducting wires; Phase slips
Issue or Number:4
Classification Code:PACS classification codes: 74.78.Na; 74.20.−z; 74.40.+k; 73.21.Hb
Record Number:CaltechAUTHORS:20100722-100915751
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20100722-100915751
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19158
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:23 Jul 2010 04:05
Last Modified:03 Oct 2019 01:53

Repository Staff Only: item control page