Angular dependence of the upper critical field in Nb/CuMn multilayers

C. Attanasio, C. Coccorese, L. Mercaldo, M. Salvato, L. Maritato, A. Lykov, S. L. Prischepa, C. M. Falco

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18 Scopus citations

Abstract

We present data related to the temperature (Formula presented) and angular (θ) dependencies of the upper critical field (Formula presented) of Nb(superconductor)-CuMn(spin glass) multilayers as a function of CuMn layer thickness and Mn concentration. We observe two-dimensional (2D) behavior for large CuMn thickness. As the CuMn layer thickness is decreased, the (Formula presented) curves correspond to three-dimensional (3D) behavior, while the (Formula presented) dependencies measured in the range (Formula presented) are more sensitive to the dimensionality of the system. In particular, the experimental data reveal a (Formula presented) crossover at very low angle when the Mn percentage is increased at fixed CuMn thickness. This behavior can be related to vortex dimensionality change in anisotropic superconductors.

Original languageEnglish (US)
Pages (from-to)6056-6060
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number10
DOIs
StatePublished - 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Attanasio, C., Coccorese, C., Mercaldo, L., Salvato, M., Maritato, L., Lykov, A., Prischepa, S. L., & Falco, C. M. (1998). Angular dependence of the upper critical field in Nb/CuMn multilayers. Physical Review B - Condensed Matter and Materials Physics, 57(10), 6056-6060. https://doi.org/10.1103/PhysRevB.57.6056