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

研究成果: Article査読

5 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)487-490
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
378-381
PART 1
DOI
出版ステータスPublished - 2002 10 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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