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Flux-lines lattice order and critical current studied by time-of-flight small-angle neutron scattering.  

imgAlain Pautrat, Annie Brulet, Charles Simon, and Patrice Mathieu, Phys. Rev. B 85 (2012) 184504.

Small-angle neutron scattering is a historical technique to study the flux-lines lattice (FLL) in a superconductor. Structural characteristics of the FLL can be revealed, providing fundamental information for the physics of a vortex lattice. However, the spatial resolution is limited and all of the correlation lengths of order are difficult to extract with precision. We show here that a time-of-flight technique reveals the Bragg peak of the FLL, and also its translational order with a better resolution. We discuss the implication of these results for pinning mechanisms in a niobium sample.

A. Menelle, 2012-12-01 00:00:00

 

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