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arXiv · 1204.4690

Localization of superconductivity in superconductor-electromagnet hybrids

G. W. Ataklti·A. Yu. Aladyshkin·W. Gillijns·I. M. Nefedov·J. Van de Vondel·A. V. Silhanek·M. Kemmler·R. Kleiner·D. Koelle·V. V. Moshchalkov
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Abstract

We investigate the nucleation of superconductivity in a superconducting Al strip under the influence of the magnetic field generated by a current-carrying Nb wire, perpendicularly oriented and located underneath the strip. The inhomogeneous magnetic field, induced by the Nb wire, produces a spatial modulation of the critical temperature T_c, leading to a controllable localization of the superconducting order parameter (OP) wave function. We demonstrate that close to the phase boundary T_c(B_ext) the localized OP solution can be displaced reversibly by either applying an external perpendicular magnetic field B_ext or by changing the amplitude of the inhomogeneous field.

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G. W. Ataklti, A. Yu. Aladyshkin, W. Gillijns, I. M. Nefedov, J. Van de Vondel, A. V. Silhanek, M. Kemmler, R. Kleiner, D. Koelle, V. V. Moshchalkov. 2012-04-20. Localization of superconductivity in superconductor-electromagnet hybrids. https://doi.org/10.1088/0953-2048/25/6/065015

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