Dynamically stabilized spin superfluidity in frustrated magnets

TL;DR

This paper investigates how an external magnetic field can dynamically stabilize spin superfluidity in frustrated magnets, enabling coherent spin transport and revealing new control mechanisms for spin textures.

Contribution

It introduces a novel dynamic stabilization mechanism for spin superfluidity in frustrated magnetic systems, contrasting it with traditional topological stabilization methods.

Findings

Magnetic field stabilizes spin superflow against fluctuations.

Critical current depends on the precessional frequency of the spin texture.

Dynamic stabilization extends the operational regime of spin superfluidity.

Abstract

We study the onset of spin superfluidity, namely coherent spin transport mediated by a topological spin texture, in frustrated exchange-dominated magnetic systems, engendered by an external magnetic field. We show that for typical device geometries used in nonlocal magnetotransport experiments, the magnetic field stabilizes a spin superflow against fluctuations, up to a critical current. For a given current, the critical field depends on the precessional frequency of the texture, which can be separately controlled. We contrast such dynamic stabilization of a spin superfluid to the conventional approaches based on topological stabilization.