A study of flux lines lattice order and critical current with time of flight small angle neutron scattering

Abstract

Small angle neutron scattering (SANS) is an 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 vortex lattice. However, the spatial resolution is limited and all 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.

accepted in PRB

References in corpus (9)

• A Bragg glass phase in the vortex lattice of a type II superconductor
• Phase Behavior of Type-II Superconductors with Quenched Point Pinning Disorder: A Phenomenological Proposal
• Quantitative analysis of the critical current due to vortex pinning by surface corrugation
• Distribution of Transport Current in a Type II Superconductor Studied by Small Angle Neutron Scattering
• Metastable states of a flux line lattice studied by transport and Small Angle Neutron Scattering
• Persistence of characteristics of an ordered flux line lattice above the second peak in $B{i}_{2}S{r}_{2}CaC{u}_2{O}_{8+\delta }$
• Voltage noise and surface current fluctuations in the superconducting surface sheath
• Structure of the flux lines lattice in NbSe2: Equilibrium state and influence of the magnetic history
• Experimental study of the correlation length of critical-current fluctuations in the presence of surface disorder: Probing vortex long-range interactions

Cited by in corpus (2)

• Imaging superconducting vortex core and lattice with the scanning tunneling microscope
• Deviations from the extended London model at high magnetic fields in YBa${}_2$Cu${}_3$O${}_7$