Spin wave vortex from the scattering on Bloch point solitons

TL;DR

This paper investigates how spin waves interact with Bloch point solitons, revealing that such scattering creates magnon vortices and interference patterns that can be experimentally observed.

Contribution

It introduces the concept of magnon vortex creation during spin wave scattering on Bloch points, linking topological structures to measurable magnon holography effects.

Findings

Scattering induces magnon vortex formation.

Interference patterns show dislocations detectable by magnon holography.

Topological properties influence spin wave propagation.

Abstract

The interaction of a spin wave with a stationary Bloch point is studied. The topological non-trivial structure of the Bloch point manifests in the propagation of spin waves endowing them with a gauge potential that resembles the one associated with the interaction of a magnetic monopole and an electron. By pursuing this analogy, we are led to the conclusion that the scattering of spin waves and Bloch points is accompanied by the creation of a magnon vortex. Interference between such a vortex and a plane wave leads to dislocations in the interference pattern that can be measurable by means of magnon holography.