Increasing the performance of a superconducting spin valve using a Heusler alloy.

ABSTRACT: We have studied superconducting properties of spin-valve thin-layer heterostructures CoO _x /F1/Cu/F2/Cu/Pb in which the ferromagnetic F1 layer was made of Permalloy while for the F2 layer we have taken a specially prepared film of the Heusler alloy Co₂Cr_1-x Fe _x Al with a small degree of spin polarization of the conduction band. The heterostructures demonstrate a significant superconducting spin-valve effect, i.e., a complete switching on and off of the superconducting current flowing through the system by manipulating the mutual orientations of the magnetization of the F1 and F2 layers. The magnitude of the effect is doubled in comparison with the previously studied analogous multilayers with the F2 layer made of

SUBMITTER: Kamashev AA 

PROVIDER: S-EPMC6009251 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature