Influence of crystalline orientation on the superconducting properties in V/Cr-multilayers

Yoshinori Kuwasawa, Tsutomu Nojima, Eisaku Touma, Masaki Fukuhara, Shigeru Nakano

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

Abstract

We investigated the superconducting properties of V/Cr-multilayers grown epitaxially on MgO(001) and Al2O2(1120) substrates. The samples with a preferred orientation of (001) and (110) were fabricated on MgO and Al2O2, respectively. The Cr-layer thickness was varied from dCr = 2 to 100 angstroms under 300 angstroms thick V- layer. The critical temperature for (001)V/Cr abruptly drops in the range of dCr = 5 to 30 angstroms, becoming a plateau above it and keeps lower than that for (110)V/Cr, in which Tc is gradually decreased up to dCr = 80 angstroms. The dimensional crossover phenomenon on the parallel upper critical fields HC2| takes place in the range of dCr = 20 approximately 70 angstroms and 5 approximately 25 angstroms for (110)V/Cr and (001)V/Cr, respectively. The superconducting layers are decoupled by dCr = 30 angstroms for (001) and 80 angstroms for (110). The multilayers with (001) texture exhibit a little larger anisotropy for HC2| in such decoupling region compared with the case of (110). The strong pair breaking effect for (001) samples may be caused by the magnetic structure of Cr(001) surface.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages291-299
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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