TY - JOUR
T1 - Distribution of transport current in a type-II superconductor studied by small-angle neutron scattering
AU - Pautrat, A
AU - Goupil, C
AU - Simon, C
AU - Charalambous, Demetris
AU - Forgan, Edward
AU - Lazard, G
AU - Mathieu, P
AU - Brulet, A
PY - 2003/2/1
Y1 - 2003/2/1
N2 - We report small-angle neutron scattering measurements on the vortex lattice in a PbIn polycrystal in the presence of an applied current. Using the rocking curves as a probe of the distribution of current in the sample, we observe that vortex pinning is due to the surface roughness. This leads to a surface current that persists in the flux-flow region. We show the influence of surface treatments on the distribution of this current.
AB - We report small-angle neutron scattering measurements on the vortex lattice in a PbIn polycrystal in the presence of an applied current. Using the rocking curves as a probe of the distribution of current in the sample, we observe that vortex pinning is due to the surface roughness. This leads to a surface current that persists in the flux-flow region. We show the influence of surface treatments on the distribution of this current.
UR - http://www.scopus.com/inward/record.url?scp=0037471171&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.90.087002
DO - 10.1103/PhysRevLett.90.087002
M3 - Article
SN - 0031-9007
VL - 90
SP - 087002(4)
JO - Physical Review Letters
JF - Physical Review Letters
ER -