Coexistence of superconductivity and superparamagnetism in Pb-Co electrodeposited nanowires

Alberto Riminucci, Walther Schwarzacher

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Abstract

Pb-Co nanowires were electrodeposited in 100 nm nominal pore diameter polycarbonate membranes. Above the TC of Pb we modelled the behaviour of the wires with a Langevin function, obtaining a Co volume of (1.06±0.01)×10-7 cm3 divided into clusters of ≈10 atoms in size. The magnetic response of the wires in the 3 K to 10 K interval, which comprises TC, was modelled by adding spherical superconducting Pb grains to the Co clusters; the Pb grains were found to be (87±6) nm in diameter. The Co clusters were not interacting and were not magnetically screened by the superconducting Pb.
Original languageEnglish
Article number161
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume123
Early online date10 Feb 2017
DOIs
Publication statusPublished - Mar 2017

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