Small angle neutron scattering and vortex lattice dynamical phase diagram

Authors
Goupil, C Pautrat, A Simon, C Kealey, PG Forgan, EM Lee, SL Johnson, ST Lazard, G Placais, B Simon, Y Mathieu, P Cubitt, R Dewhurst, C
Citation
C. Goupil et al., Small angle neutron scattering and vortex lattice dynamical phase diagram, PHYSICA C, 341, 2000, pp. 999-1002
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
2
Pages
999 - 1002
Database
ISI
SICI code
0921-4534(200011)341:<999:SANSAV>2.0.ZU;2-#
Abstract
We report a detailed neutron diffraction study of both pinned and moving ma gnetic Flux Line Lattice (FLL) in NbTa and PbIn samples. In NbTa, the FLL p resents a hexagonal lattice even in the absence of current, meanwhile PbIn presents a strongly dislocated phase. In PbIn, dislocations are eliminated by the application of transport current in agreement with theoretical predi ctions. On the other hand, the absence of curvature of the flux lines for s ubcritical currents confirm the presence of surface pinning of the FLL.