Observation of large intrinsic anomalous Hall conductivity in polycrystalline Mn${}_3$Sn films

Abstract

We report the observation of anomalous Hall effect in Mn${}_3$Sn polycrystalline thin films deposited on Pt coated Al${}_2$O${}_3$ substrate with a large anomalous Hall conductivity of 65($\Omega$cm)${}^{-1}$ at 3K. The Hall and magnetic measurements show a very small hysteresis owing to a weak ferromagnetic moment in this material. The longitudinal resistivity decreases sufficiently for the thin films as compared to the polycrystalline bulk sample used as the target for the film deposition. The anomalous Hall resistivity and conductivity decreases almost linearly with the increase in the temperature. A negative magnetoresistance is observed for all the measured temperatures with the negative decrease in the magnitude with the increase in temperature.

References in corpus (4)

• Anomalous Hall Effect in Weyl Metals
• Non-collinear Antiferromagnets and the Anomalous Hall Effect
• Comparing the anomalous Hall effect and the magneto-optical Kerr effect through antiferromagnetic phase transitions in Mn${}_3$Sn
• Magnetoresistance and anomalous Hall effect in micro-ribbons of the magnetic Weyl semimetal Co${}_3$Sn${}_2$S${}_2$

Cited by in corpus (2)

• Detailed structural and topological analysis of SnBi2Te4 single crystal
• A combined First-principles and Boltzmann transport theory methodology for studying magnetotransport in magnetic materials