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arXiv · 1709.09151

In-depth study of the $H -T$ phase diagram of Sr4Ru3O10 by magnetization experiments

F. Weickert·L. Civale·B. Maiorov·M. Jaime·M. B. Salamon·E. Carleschi·A. M. Strydom·R. Fittipaldi·V. Granata·A. Vecchione
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Abstract

We present magnetization measurements on Sr4Ru3O10 as a function of temperature and magnetic field applied perpendicular to the magnetic easy $c$-axis inside the ferromagnetic phase. Peculiar metamagnetism evolves in Sr4Ru3O10 below the ferromagnetic transition $T_{C}$ as a double step in the magnetization at two critical fields $H_{c1}$ and $H_{c2}$. We map the $H-T$ phase diagram with special focus on the temperature range 50\,K $\le T \le T_{C}$. We find that the critical field $H_{c1}(T)$ connects the field and temperature axes of the phase diagram, whereas the $H_{c2}$ boundary starts at 2.8\,T for the lowest temperatures and ends in a critical endpoint at (1\,T; 80\,K). We conclude from the temperature dependence of the ratio $\frac{Hc1}{Hc2}(T)$ that the double metamagnetic transition is an intrinisc effect of the material and it is not caused by sample stacking faults such as twinning or partial in-plane rotation between layers.

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F. Weickert, L. Civale, B. Maiorov, M. Jaime, M. B. Salamon, E. Carleschi, A. M. Strydom, R. Fittipaldi, V. Granata, A. Vecchione. 2017-09-26. In-depth study of the $H -T$ phase diagram of Sr4Ru3O10 by magnetization experiments. https://doi.org/10.1016/j.physb.2017.09.106

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