The small angle neutron scattering diffraction patterns from the flux line lattice state in the layered hexagonal superconductor CaAlSi are observed. Under an applied magnetic field (H) parallel to the crystalline c-axis, a hexagonal vortex structure is observed over the entire temperature/field regions. On the other hand, the vortex configuration under H ∥ a shows an ellipsoidal arrangement of the first-order Bragg peaks due to the anisotropic penetration depth. It was inferred from these results that the vortex state characterized by penetration depth and coherence length in CaAlSi may be described by that of anisotropic uniaxial superconductor using London theory.
|Number of pages||4|
|Journal||Journal of Physics and Chemistry of Solids|
|Publication status||Published - Nov 2007|
- A. Superconductors
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics