Superconducting properties of nanostructured microhelices

Vladimir M. Fomin, Roman O. Rezaev, Evgenii A. Levchenko, Daniel Grimm, Oliver G. Schmidt

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Superconducting micro- and nanohelices are proposed for the first time. A theoretical investigation of the superconducting state in the helical coils at the micro- and nanoscale is performed within the time-dependent Ginzburg-Landau approach. The pattern and number of vortices in a stationary distribution are determined by their confinement to the ultrathin helical coil and can therefore be efficiently controlled by the spiral stripe width and the spiral pitch distance for both dense and sparse coils. Quasi-degeneracy of vortex patterns is manifested in the helical coil when the number of vortices is incommensurable with the total number of half-turns. With increasing radius, superconducting helical coils provide a physical realization of a transition from the vortex pattern peculiar to an open tube to that of a planar stripe.

Original languageEnglish
Article number395301
JournalJournal of Physics Condensed Matter
Volume29
Issue number39
DOIs
Publication statusPublished - 21 Aug 2017

Keywords

  • stationary distribution of vortices
  • superconducting helical coils at micro-and nanoscale
  • superconducting vortices
  • vortex pattern

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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