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

被引：7

作者：

Pautrat, Alain ^{[1
,2
]}

Brulet, Annie ^{[3
,4
]}

Simon, Charles ^{[1
,2
]}

Mathieu, Patrice ^{[5
,6
]}

机构：

[1] ENSICAEN, CNRS, UMR 6508, Lab CRISMAT, F-14050 Caen 4, France

[2] Univ Caen, F-14050 Caen 4, France

[3] CNRS, UMR 12, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[4] CEA Saclay, CEA, F-91191 Gif Sur Yvette, France

[5] Univ Paris 06, Lab Pierre Aigrain, Ecole Normale Super, CNRS,UMR 8551, F-75231 Paris 5, France

[6] Univ Paris 07, Lab Pierre Aigrain, Ecole Normale Super, CNRS,UMR 8551, F-75231 Paris 5, France

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 18期

关键词：

II SUPERCONDUCTORS; SINGLE-CRYSTAL; VORTEX MOTION; DIFFRACTION; RESOLUTION; SYMMETRY; NIOBIUM; PHASE; NB;

D O I：

10.1103/PhysRevB.85.184504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：5

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