Abstract
We present a detailed study of the magnetic properties of weakly ferromagnetic/quantum critical using muon spin rotation and relaxation (). By means of an angular dependent study of the muon spin rotation signal in applied magnetic fields on a single crystal in the paramagnetic state we establish the muon stopping site in the crystallographic lattice of . With this knowledge we develop models to describe the muon spin rotation and relaxation signals in the weakly ferromagnetic, spin density wave, and quantum critical phases of and fit the corresponding experimental data. In particular, we quantify the response for quantum critical behavior in and extract the influence of residual weak structural disorder. From our analysis, emerges to be uniquely suited to study quantum criticality close to weak itinerant ferromagnetic order.
4 More- Received 6 April 2022
- Revised 21 July 2022
- Accepted 26 September 2022
DOI:https://doi.org/10.1103/PhysRevB.106.134408
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