Random-matrix theory of Andreev reflection from a topological superconductor

Magnetoanisotropic Andreev reflection in ferromagnet-superconductor junctions.

Andreev reflection spectroscopy of ferromagnet-superconductor (FS) junctions [corrected] is an important probe of spin polarization. We theoretically investigate spin-polarized transport in FS junctions in the presence of Rashba and Dresselhaus interfacial spin-orbit fields and show that Andreev reflection can be controlled by changing the magnetization orientation. We predict a giant in- and o...

Triplet Superconductivity and Crossed Andreev Reflection in Ferromagnet/Superconductor Heterostructures

Triplet Superconductivity and Crossed Andreev Reflection in Ferromagnet/Superconductor Heterostructures

Evidence for crossed Andreev reflection in superconductor-ferromagnet hybrid structures.

We have measured the nonlocal resistance of aluminum-iron spin-valve structures fabricated by e-beam lithography and shadow evaporation. The sample geometry consists of an aluminum bar with two or more ferromagnetic wires forming point contacts to the aluminum at varying distances from each other. In the normal state of aluminum, we observe a spin-valve signal which allows us to control the rel...

Gate-tunable supercurrent and multiple Andreev reflections in a superconductor-topological insulator nanoribbon-superconductor hybrid device

Comment on "Unified formalism of Andreev reflection at a ferromagnet/superconductor interface".