Superconductivity controlled by the magnetic state of ferromagnetic nanoparticles

Fraerman, A. A.; Gribkov, B. A.; Gusev, S. A.; Ilichev, E.; Klimov, A. Yu.; Nozdrin, Yu. N.; Pakhomov, G. L.; Rogov, V. V.; Stolz, R.; Vdovichev, S. N.

Superconductivity controlled by the magnetic state of ferromagnetic nanoparticles

Authors

Description

Novel hybrid superconductor/ferromagnetic particles structures are presented. Arrays of Co submicron particles were fabricated on overlap, edge type Josephson junctions and on a narrow Nb microbridge by means of high-resolution e-beam lithography.We observed a strong dependence between the magnetic state of the particles and the field-dependent critical $I_c(H)$ of these structures.
5 pages, 6 figures