Mechanism for the peak effect of critical current in superconducting multilayers

Saburo Takahashi, Toshio Hirai, Masashi Tachiki

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

We theoretically study the vortex states in superconducting multilayers whose components are superconductors with nearly same transition temperatures but very different upper critical fields. We solve the nonlinear Ginzburg-Landau equations numerically for the vortex lattice state of the multilayers. Two kinds of different vortex lattice states appear between the lower and upper critical fields. From the free energy calculations, we determine the phase boundary between the two vortex lattice states and map a phase diagram in the H-T plane. The peak effect of the critical current observed in Nb/NbZr multilayers is discussed in connection with the vortex states in these multilayers.

本文言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
出版社Publ by Society of Photo-Optical Instrumentation Engineers
ページ263-271
ページ数9
ISBN(印刷版)0819414522, 9780819414526
DOI
出版ステータスPublished - 1994
外部発表はい
イベントSuperconducting Superlattices and Multilayers - Los Angeles, CA, USA
継続期間: 1994 1月 241994 1月 25

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
2157
ISSN(印刷版)0277-786X

Other

OtherSuperconducting Superlattices and Multilayers
CityLos Angeles, CA, USA
Period94/1/2494/1/25

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
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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