Hall effect and flux pinning of YBa2 Cu3O y/Nd0.7Sr0.3MnO3 multilayers

H. C. Yang, L. M. Wang, H. E. Horng, B. T. Su, J. H. Chen

Research output: Contribution to journalArticle

Abstract

Hall coefficients of superconducting YBa2Cu3O y/Nd0.7Sr0.3MnO3 (YBCO/NSMO) multilayers were measured to investigate the effect of flux pinning on the Hall behavior. The lower pinning ability accompanying a diminishing sign reversal of Hall coefficient is due to a decrease of flux pinning in YBCO/NSMO multilayers. The volume pinning force, Fp= -Jc × H, of YBCO/NSMO multilayers can be represented as Fp ∞ (H/Hc2) 0.5(1 - H/Hc2)2. This suggests the existence of two-dimensional pinning centers in measured samples. The Hall coefficient and pinning force of (YBCO/NSMO) multilayers are compared with data of YBa 2Cu3Oy/PrBa2 Cu3 O y superlattices.

Original languageEnglish
Pages (from-to)361-363
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume226-230
Issue numberPART I
DOIs
Publication statusPublished - 2001 Jan 1

Keywords

  • Flux pinning
  • Hall effect
  • Multilayers
  • Superconductors-magnetic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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