Electron spin resonance in spiral antiferromagnet linarite: Theory and experiment

Spin structures realized in magnetic materials with competing exchange interactions depend crucially on weak additional interactions, such as relativistic magnetic anisotropies, farther-neighbor exchanges, etc. This is the case in the natural magnetic mineral linarite, which has attracted a lot of attention due to its rich phase diagram. Electron spin resonance (ESR) is a sensitive experimental technique that allows to probe the presence and...