Flux Line Lattice Reorientation in the Borocarbide Superconductors with H ∥ a
Abstract
Small angle neutron scattering studies of the flux line lattice in LuNi2B2C and ErNi2B2C induced by a field parallel to the a axis reveal a first order flux line lattice reorientation transition. Below the transition the flux line lattice nearest neighbor direction is parallel to the b axis, and above the transition it is parallel to the c axis. This transition cannot be explained using nonlocal corrections to the London model. In addition, the anisotropy of the penetration depth λ and the coherence length ξ change at the transition.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 2001
- DOI:
- 10.1103/PhysRevLett.86.320
- Bibcode:
- 2001PhRvL..86..320E