Proximity Effect in Superconductor/Ferromagnet Layered Structures

Abstract

Superconducting properties of proximity coupled Nb/Ni bilayers were investigated. Distinct oscillations of the superconducting critical temperature upon increasing of the ferromagnet layer thickness, dNi, are observed. The results are discussed in terms of Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) quasi-one-dimensional superconducting state.