Ultrathin, doubly connected superconducting cylinders: A link between one- and two-dimensional superconductors

Y. Liu, H. Wang, Yu Zadorozhny, M. M. Rosario, B. Y. Rock, N. A. Kurz, P. T. Carrigan

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

In this review we summarize our work on the destructive regime, the loss of superconductivity near half-flux quanta, and present new data on the possible observation of vortex-antivortex unbinding in ultrathin, doubly connected superconducting cylinders. These cylinders were prepared by evaporating a superconducting film onto a rotating quartz filament with a diameter as small as 100 nm, which is comparable with or smaller than the zero-temperature superconducting coherence length, ξ (0). For cylinders with a relatively large diameter, bound vortex-antivortex pairs induced by thermal fluctuation and the loss of superconductivity through the unbinding of these pairs above a critical temperature are expected. However, when the diameter of the cylinder becomes smaller than ξ (0), superconductivity is lost near the half-flux quanta even in the zero-temperature limit. We argue that this unique quasi one-dimensional system provides a link between one- and two-dimensional superconductors.

Original languageEnglish (US)
Pages (from-to)331-336
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume468
Issue number4
DOIs
StatePublished - Feb 15 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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