μ SR measurements on the vortex lattice of CaAlSi: Anisotropic response in magnetic penetration depth

S. Kuroiwa, K. H. Satoh, A. Koda, R. Kadono, K. Ohishi, W. Higemoto, Jun Akimitsu

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2 Citations (Scopus)

Abstract

The vortex state defined by two characteristic length scales, magnetic penetration depth (λ) and coherence length (ξ), in a layered hexagonal superconductor CaAlSi was probed using muon spin rotation. From preliminary analysis using modified London model, we found that the in-plane λ increases with increasing magnetic field while inter-plane λ is almost independent of magnetic field. The presence of field-induced quasiparticle excitation manifested in the field dependence of λ suggests that CaAlSi has an anisotropic gap structure (nodes/dips or multi-gapped).

Original languageEnglish
Pages (from-to)2124-2128
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume68
Issue number11
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

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Keywords

  • A. Superconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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