Mechanism for the peak effect of critical current in superconducting multilayers

Saburo Takahashi, Toshio Hirai, Masashi Tachiki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages263-271
Number of pages9
ISBN (Print)0819414522, 9780819414526
DOIs
Publication statusPublished - 1994
Externally publishedYes
EventSuperconducting Superlattices and Multilayers - Los Angeles, CA, USA
Duration: 1994 Jan 241994 Jan 25

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2157
ISSN (Print)0277-786X

Other

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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