Trapping and squeezing of vortices in voids directly observed by scanning tunneling microscopy and spectroscopy

Takaaki Tominaga, Takaki Sakamoto, Howon Kim, Takahiro Nishio, Toyoaki Eguchi, Yukio Hasegawa

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Using low-temperature scanning tunneling microscopy and spectroscopy, we have studied quantized magnetic fluxes (vortices) that penetrated nanosized superconductors with void structures inside. The void structures act as a pinning center for the vortices, and the trapped vortices are confined and squeezed inside. When multiple vortices are trapped in voids, a cluster of vortices and a giant vortex were formed as a result of the squeezing, depending on the depth and the size of the trapping potential.

Original languageEnglish
Article number195434
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number19
DOIs
Publication statusPublished - 2013 May 20
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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