Periodic nanostructured pins and the anomaly in the critical depinning force

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For the first time, molecular dynamic simulations based on dense nanostructured periodic arrays of pinning sites were carried out. The variables in the simulations were the vortex density, the temperature, the pinning strength, the size of pinning sites. An interesting dip was found to occur in the critical current density but only at zero temperature and for specific values of pinning strength. The properties of the dip were found to depend strongly on the initial positions of the vortices with respect to the positions of the pinning sites. The occurrence of the dip is attributed to the formation of one dimensional linear channels of moving vortices in the direction of the applied current. The pinning strength was also found to have an important role in determining the relative depth of the dip.

Original languageEnglish
Title of host publicationNANOTECHNOLOGY AND ITS APPLICATIONS
Subtitle of host publicationFirst Sharjah International Conference on Nanotechnology and Its Applications
Pages22-27
Number of pages6
DOIs
Publication statusPublished - 2007
EventNANOTECHNOLOGY AND ITS APPLICATIONS: First Sharjah International Conference on Nanotechnology and Its Applications - Sharjah, United Arab Emirates
Duration: Apr 10 2007Apr 12 2007

Publication series

NameAIP Conference Proceedings
Volume929
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherNANOTECHNOLOGY AND ITS APPLICATIONS: First Sharjah International Conference on Nanotechnology and Its Applications
Country/TerritoryUnited Arab Emirates
CitySharjah
Period4/10/074/12/07

Keywords

  • Critical current density
  • Dip effect
  • Periodic nanostructures
  • Simulations

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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