Flux pinning in superconductor/normal metal heterostructures

Ljiljana Dobrosavljevic-Grujic; Vesna Prokic; Dragomir Davidovic

doi:10.1117/12.179170

29 June 1994 Flux pinning in superconductor/normal metal heterostructures

Ljiljana Dobrosavljevic-Grujic, Vesna Prokic, Dragomir Davidovic

Proceedings Volume 2157, Superconducting Superlattices and Multilayers; (1994) https://doi.org/10.1117/12.179170
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

We have shown, within the Ginzburg-Landau theory, that the interaction between a single vortex and a normal metal microdefect in the high T_c superconducting matrix can cause high critical current densities j_c. The interaction is primarily magnetic, except at very low temperatures T, where the core interaction is dominant. For a lattice of vortices commensurate with an array of defects in a parallel magnetic field H, strong magnetic pinning is obtained, with a non-monotonic critical current dependence on H, and with j_c of the order of 10⁷ - 10⁸ A/cm².

Citation Download Citation

Ljiljana Dobrosavljevic-Grujic, Vesna Prokic, and Dragomir Davidovic "Flux pinning in superconductor/normal metal heterostructures", Proc. SPIE 2157, Superconducting Superlattices and Multilayers, (29 June 1994); https://doi.org/10.1117/12.179170

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