Magnetic phase separation in EuB6 detected by muon spin rotation

Abstract

We report results of the first muon-spin rotation measurements performed on the low carrier density ferromagnet EuB${}_6$. The ferromagnetic state is reached via two magnetic transitions at $T_{\mathrm{m}}=16.5$ K and $T_{\mathrm{c}}=12.6$ K. Two distinct components are resolved in the muon data, one oscillatory and one non-oscillatory, which arise from different types of magnetic environment, and we have followed the temperature dependence of these components in detail. These results provide evidence for magnetic phase separation and can be interpreted in terms of the gradual coalescing of magnetic polarons.

arXiv comment4 pages, 3 figures

References in corpus (5)

• Spin-polarized muons in condensed matter physics
• Observation of two time scales in the ferromagnetic manganite La(1-x)Ca(x)MnO(3), x = 0.3
• Kondo and anti-Kondo coupling to local moments in EuB${}_6$
• Electronic transport in EuB${}_6$
• Spin-polaron model: transport properties of EuB${}_6$

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