Superconductivity in Hierarchical 3D Nanostructured Pb–In Alloys

Shevchun, A.F.; Strukova, G.K.; Shmyt’ko, I.M.; Strukov, G.V.; Vitkalov, S.A.; Yakovlev, D.S.; Nazhestkin, I.A.; Shovkun, D.V.

Авторы: Shevchun Artem F., Strukova Galina K., Shmyt’ko Ivan M., Strukov Gennady V., Vitkalov Sergey A., Yakovlev Dmitry S., Nazhestkin Ivan A., Shovkun Dmitry V.
Журнал: Symmetry
Том: 14
Номер: 10
Год издания: 2022
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Первая страница: 2142
DOI: 10.3390/sym14102142
Аннотация: The superconducting properties of hierarchical nanostructured samples of Pb–In alloys have been studied by the measurement of dynamic susceptibility χ(T) temperature dependence. Symmetric samples with different shapes and sizes were formed on a brass metallic net by cathode-metal electrodeposition with a programmed pulsing current. Two different kinds of χ(T) dependence were observed in synthesized structures. The first kind was a broad superconductive transition without energy dissipation with a very weak response to the external magnetic field. The second kind was, conversely, an abrupt transition signifying an energy dissipation with a significant field response. This behavior depends on the ratio between a superconducting domain size (defined by the London penetration depth λ) and a crystallite size. In these cases, one or several superconducting domains are present in a sample. This result paves the way to controlling a superconducting domain size in materials with the parameters of a pulsed current.
Добавил в систему: Яковлев Дмитрий Сергеевич

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