Magnetotransport studies of EuFe${}_2$As${}_2$: the influence of the Eu${}^{2+}$ magnetic moments

Abstract

We report resistivity $\rho$ and Hall effect measurements on EuFe${}_2$As${}_2$ at ambient pressure and 28 kbar and magnetization measurements at ambient pressure. We analyze the temperature and magnetic-field dependence of $\rho$ and the Hall effect using a molecular-field theory for magnetoresistance and an empirical formula for the anomalous Hall effect and find that electron scattering due to the Eu${}^{2+}$ local moments plays only a minor role in determining electronic transport properties of EuFe${}_2$As${}_2$.

Published in J. Phys. Soc. Jpn

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• Electron spin resonance in Eu based Fe pnictides
• Strongly anisotropic antiferromagnetic coupling in EuFe2As2 revealed by stress detwinning