Emergent anisotropy in magnetic metamaterials

TL;DR

This paper reveals how magnetic metamaterials exhibit directional dependence in their internal magnetization textures, leading to anisotropic magnetic properties influenced by atomic and mesoscopic scale interactions.

Contribution

It introduces the concept of emergent anisotropy in magnetic metamaterials caused by coupling across different length scales, with experimental quantification of texture and interaction energy.

Findings

Directional dependence of remanent magnetization observed

Anisotropy linked to internal texture modifications

Coupling of atomic and mesoscopic scales influences magnetic behavior

Abstract

We demonstrate directional dependence of the self-modification of internal mesospin textures in magnetic metamaterials, arising from the coupling of the atomic- and mesoscopic length-scales. Dressing the mesospins in different directions enables the quantification of the degree of texture in the internal magnetization and its impact on the interaction energy of the mesospins. The emerging anisotropy is manifested in a directional dependence of the remanent magnetization with temperature.