# Topological superconductivity with deformable magnetic skyrmions

## TL;DR

This paper demonstrates that magnetic skyrmions can induce topological superconductivity and host Majorana modes without extra ingredients, with a robust, scalable chiral Majorana band along skyrmion edges.

## Contribution

It reveals a new mechanism for topological superconductivity using deformable magnetic skyrmions proximitized with conventional superconductors.

## Key findings

- Majorana zero mode in skyrmion core
- Chiral Majorana band on skyrmion edge
- Majorana modes scale with skyrmion perimeter

## Abstract

Magnetic skyrmions are nanoscale spin configurations that can be efficiently created and manipulated. They hold great promises for next-generation spintronics applications. In parallel to these developments, the interplay of magnetism, superconductivity and spin-orbit coupling has proved to be a versatile platform for engineering topological superconductivity predicted to host non-abelian excitations, Majorana zero modes. We show that topological superconductivity can be induced by proximitizing magnetic skyrmions and conventional superconductors, without need for additional ingredients. Apart from a previously reported Majorana zero mode in the core of the skyrmion, we find a more universal chiral band of Majorana modes on the edge of the skyrmion. We show that the chiral Majorana band is effectively flat in the physically relevant regime of parameters, leading to interesting robustness and scaling properties. In particular, the number of Majorana modes in the (nearly-)flat band scales with the perimeter length of a deformed skyrmion configuration, while being robust to local disorder.