Topological properties of spin block magnetic ladders in proximity of a superconductor: application to BaFe${}_2$S${}_3$

Shivam Yadav, Pascal Simon, Andrzej Ptok

Monoatomic chains with magnetic order in proximity of a s-wave superconductor can host Majorana edge modes. In this paper, we extend this idea to more complex spin-block chains suc…