Anomalous matching effect and attractive vortex interaction in 7.5-μm triangular microhole lattice on Pb film

Takekazu Ishida, Masaaki Yoshida, Shin'ichiro Nakata, Tomio Koyama

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

It is considerably exciting to explore the novel vortex physics in multiply connected superconductors. We prepare triangular microhole lattice on Pb film (TriMHoLP) by evaporation of a type-I superconductor Pb upon a capillary plate (6-μm hole and 7.5-μm pitch) in vacuum. We measure the magnetization of TriMHoLP in the RSO mode under low fields (|H| ≤ 4.7 G). The polarity of magnetization peaks is identical against the field reversal. The magnetization curves as a function of temperature taken in a field-cooling mode of RSO are always positive irrelevant to the field polarity. We show that a vortex-vortex interaction is not always repulsive in a low-κ superconductor. We consider that a spontaneous magnetization and an anomalous matching effect near Tc are relevant to the attractive interaction between vortices.

Original languageEnglish
Pages (from-to)487-490
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume378-381
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Oct 1

Keywords

  • Magnetization
  • Matching field
  • Superconducting network
  • The Little-Parks effect
  • Vortex

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Anomalous matching effect and attractive vortex interaction in 7.5-μm triangular microhole lattice on Pb film'. Together they form a unique fingerprint.

  • Cite this