MISC

2007年2月

Gate-controlled superconductivity in a diffusive multiwalled carbon nanotube

PHYSICAL REVIEW LETTERS
  • T. Tsuneta
  • ,
  • L. Lechner
  • ,
  • P. J. Hakonen

98
8
開始ページ
087002/1-4
終了ページ
記述言語
英語
掲載種別
DOI
10.1103/PhysRevLett.98.087002
出版者・発行元
AMERICAN PHYSICAL SOC

We have investigated electrical transport in a diffusive multiwalled carbon nanotube contacted using superconducting leads made of an Al/Ti sandwich structure. We find proximity-induced superconductivity with measured critical currents up to I-cm=1.3 nA, tunable by the gate voltage down to 10 pA. The supercurrent branch displays a finite zero bias resistance which varies as R-0 proportional to I-cm(-alpha) with alpha=0.74. Using IV characteristics of junctions with phase diffusion, a good agreement is obtained with the Josephson coupling energy in the long, diffusive junction model of A. D. Zaikin and G. F. Zharkov.

Web of Science ® 被引用回数 : 32

リンク情報
DOI
https://doi.org/10.1103/PhysRevLett.98.087002
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000244420700049&DestApp=WOS_CPL

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