Dynamic Control of the Vortex Pinning Potential in a Superconductor Using Current Injection through Nanoscale Patterns

Yoav Kalcheim*, Eran Katzir, Felix Zeides, Nadav Katz, Yossi Paltiel, Oded Millo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Control over the vortex potential at the nanoscale in a superconductor is a subject of great interest for both fundamental and technological reasons. Many methods for achieving artificial pinning centers have been demonstrated, for example, with magnetic nanostructures or engineered imperfections, yielding many intriguing effects. However, these pinning mechanisms do not offer dynamic control over the strength of the patterned vortex potential because they involve static nanostructures created in or near the superconductor. Dynamic control has been achieved with scanning probe methods on the single vortex level but these are difficult so scale up. Here, we show that by applying controllable nanopatterned current injection, the superconductor can be locally driven out of equilibrium, creating an artificial vortex potential that can be tuned by the magnitude of the injected current, yielding a unique vortex channeling effect.

Original languageAmerican English
Pages (from-to)2934-2939
Number of pages6
JournalNano Letters
Volume17
Issue number5
DOIs
StatePublished - 10 May 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

  • Superconducting vortices
  • artificial vortex pinning
  • nonequilibrium quasiparticle distribution
  • superconductivity
  • vortex manipulation

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