English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Recent experiments [I.V. Grigorieva et al., Phys. Rev. Lett. 96, 077005(2006)] on visualization of vortices using the Bitter decoration techniquerevealed vortex shells in mesoscopic superconducting Nb disks containing up toL=40 vortices. Some of the found configurations did not agree with thosepredicted theoretically. We show here that this discrepancy can be traced backto the larger disks with radii R ~ 1 to 2.5\mu m, i.e., R ~ 50-100\xi(0) usedin the experiment, while in previous theoretical studies vortex states withvorticity L < 40 were analyzed for smaller disks with R ~ 5-20\xi(0). Thepresent analysis is done for thin disks (mesoscopic regime) and for thick(macroscopic) disks where the London screening is taken into account. We foundthat the radius of the superconducting disk has a pronounced influence on thevortex configuration in contrast to, e.g., the case of parabolic confinedcharged particles. The missing vortex configurations and the region of theirstability are found, which are in agreement with those observed in theexperiment.

Formation and Size-Dependence of Vortex Shells in Mesoscopic Superconducting Niobium Disks