What question did this study set out to answer?

To determine how submicrometric nickel line arrays influence flux pinning anisotropy and energy dissipation in superconducting niobium films under magnetic fields.

October 7, 2002Applied Physics LettersOpen Access

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

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To determine how submicrometric nickel line arrays influence flux pinning anisotropy and energy dissipation in superconducting niobium films under magnetic fields.
Fabricated periodic arrays of submicrometric nickel lines onto superconducting niobium films using electron beam lithography.
Measured resistivity curves, ρ(B), across varying magnetic fields with vortex motion oriented both perpendicular and parallel to the nickel lines.
Reduced energy dissipation by several orders of magnitude across the entire applied magnetic field range when vortex motion was directed perpendicular rather than parallel to the nickel lines.
Observed a distinct slope change in the ρ(B) resistivity curves when vortices moved perpendicular to the lines and the vortex lattice parameter matched the line width.

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Implication

Experimental study demonstrates anisotropic dissipation reduction in niobium films patterned with nickel lines, suggesting enhanced directional vortex pinning.

Cite This Study

Jaque et al. (2002) studied this question.

synapsesocial.com/papers/6a99bda31d7d17f4cde275af https://doi.org/10.1063/1.1512947

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Implication

Experimental study demonstrates anisotropic dissipation reduction in niobium films patterned with nickel lines, suggesting enhanced directional vortex pinning.

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

Key Points

Discussion

Implication

Cite This Study

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

Key Points

Discussion

Implication

Cite This Study

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