94 research outputs found
Increasing the performance of the superconducting spin valve using a Heusler alloy
We have studied superconducting properties of the spin-valve thin layer
heterostructures CoO/F1/Cu/F2/Cu/Pb where the ferromagnetic F1 layer was
standardly made of Permalloy whereas for the F2 layer we have taken a specially
prepared film of the Heusler alloy CoCrFeAl 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 the strong ferromagnet Fe.
Theoretical analysis shows that a drastic enhancement of the switching effect
is due to a smaller exchange field in the heterostructure coming from the
Heusler film as compared to Fe. This enables to approach almost ideal
theoretical magnitude of the switching in the Heusler-based multilayer with the
F2 layer thickness of \,nm
Electrical properties of heterointerfaces composed of complex ferroelectric oxides: an experimental investigation
The reported study was funded by RFBR according to the research project № 18-32-00595
Heterostructure with ferroelectric: growth and conductivity measurements
The reported study was funded by RFBR according to the research project № 18-32-00595
Ab initio insight into the electronic properties of heterointerfaces composed of nonpolar ferroelectric oxides
The reported study was funded by RFBR according to the research project № 18-32-00595. The research is carried out using the equipment of the shared research facilities of HPC computing resources at Lomonosov Moscow State University
- …