Abstract
We present an in-depth analysis of muon-spin spectroscopy measurements of under the effect of the isovalent and diamagnetic substitution as well as of external pressure. Our results evidence an anomalous correlation between the magnetic volume fraction and the order parameter only for stoichiometric , pointing towards highly unconventional properties of the magnetic phase developing therein. We argue that magnetism in develops based on the nucleation of magnetic droplets at , whose successive growth is limited by the need of a continuous generation of magnetic hedgehog monopoles.
- Received 16 March 2020
- Accepted 7 May 2020
DOI:https://doi.org/10.1103/PhysRevB.101.174435
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