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Open Access item Anisotropic pinning enhancement in Nb films with arrays of submicrometric Ni lines

Authors:Jaque, Daniel
González, E. M.
Martín, J. I.
Anguita, José Virgilio
Vicent, J. L.
Issue Date:19-Aug-2002
Publisher:American Institute of Physics
Citation:Applied Physics Letters 81: 2851 (2002)
Abstract:Arrays of submicrometric Ni lines have been fabricated in superconducting Nb films by electron beam lithography. In the mixed state, these arrays induce strong anisotropy in the dissipation behavior. The dissipation is reduced several orders of magnitude, in the whole applied magnetic field range, when the vortex motion is perpendicular to the Ni lines (applied current parallel to them) in comparison with dissipation of vortices moving parallel to the lines. In addition, for the samples studied in this work, a change in the slope of the ρ(B) curves is observed when the vortices move perpendicular to the lines and the vortex lattice parameter matches the width of the Ni lines. © 2002 American Institute of Physics.
Publisher version (URL):http://dx.doi.org/ 10.1063/1.151294
Appears in Collections:(IMM-CNM) Artículos

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