Pinning forces in Nb/CuMn multilayers

TitlePinning forces in Nb/CuMn multilayers
Publication TypePresentazione a Congresso
Year of Publication1998
AuthorsMaritato, L., Attanasio C., Barbanera S., Coccorese C., Di Luccio Tiziana, Mercaldo L.V., Prischepa S.L., Russo R., and Salvato M.
Conference NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE, Bellingham, WA, United States
Conference LocationSan Diego, CA, USA
KeywordsMagnetic fields, Magnetron sputtering, Manganese, Multilayers, Pinning forces, Superconducting materials, Transport properties

Nb/CuMn multilayers, with different CuMn layer thicknesses and Mn concentration have been realized by sputtering. On the patterned superconducting samples the transport properties have been measured at different temperatures and external parallel and perpendicular magnetic fields. The pinning force curves obtained in the case of perpendicular magnetic fields, clearly present a temperature scaling indicating a common pinning mechanism active at all the investigated temperatures, while in the case of parallel magnetic fields such scaling was not observed. The dependence of the pinning forces upon the Mn concentration has also been investigated. Preliminary measurements on Nb/CuMn samples with a regular array of artificial dots are also presented.