Magnetic response in the superconducting state of 1H-Ca(Al 0.5Si 0.5) 2 studied by μSR

S. Kuroiwa, H. Takagiwa, M. Yamazawa, Y. Tomita, J. Akimitsu, K. Ohishi, A. Koda, S. R. Saha, R. Kadono, W. Higemoto

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Abstract

Magnetic field dependence of the effective penetration depth (λ) determined by μSR is reported for 1H-Ca(Al0.5Si0.5)2, a structurally new phase of Ca(Al0.5Si0.5)2. The new phase has an AlB2-type crystal structure with P3 symmetry which, in contrast to earlier reports, does not exhibit superlattice structure along the c-axis. The bulk susceptibility measurement indicates that the upper critical field is much lower than that in superstructured ones for both c- and a-axis directions. A weak anisotropy in the superconducting order parameter is suggested from the increase of λ with increasing external field.

Original languageEnglish
Pages (from-to)251-254
Number of pages4
JournalPhysica B: Condensed Matter
Volume374-375
DOIs
Publication statusPublished - Mar 31 2006
Externally publishedYes
EventProceedings of the Tenth International Conference on Muon Spin Rotation, Relaxation and Resonance -
Duration: Aug 8 2005Aug 12 2005

Keywords

  • Ca(Al Si )
  • Flux line lattice
  • Magnetic penetration depth
  • μSR

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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    Kuroiwa, S., Takagiwa, H., Yamazawa, M., Tomita, Y., Akimitsu, J., Ohishi, K., Koda, A., Saha, S. R., Kadono, R., & Higemoto, W. (2006). Magnetic response in the superconducting state of 1H-Ca(Al 0.5Si 0.5) 2 studied by μSR. Physica B: Condensed Matter, 374-375, 251-254. https://doi.org/10.1016/j.physb.2005.11.067