Speaker
Piet Brouwer Brouwer
(Freie Universitaet Berlin)
Description
Cooper pairs in conventional superconductors carry no spin. Spin-polarized Cooper pairs require unconventional forms of superconductivity. I'll review how such spin-polarized superconductivity and topological superconductivity can arise in superconductor-magnet heterostructures with non-collinear magnetizations. Recent experiments on the chiral kagome antiferromagnet Mn3Ge have provided strong evidence of proximity-induced spin-polarized superconductivity. I introduce and explore a minimal model which exhibits a rich phase diagram as a function of chemical potential and spin canting, which has various topological and non-topological forms of spin-polarized superconductivity.