Anomalous Hall effect in the weak-itinerant ferrimagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>FeCr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Te</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>
Yu Liu, Hengxin Tan, Zhixiang Hu, Binghai Yan, C. Petrović
Abstract
We carried out a comprehensive study of electronic transport, thermal, and thermodynamic properties in $\mathrm{Fe}{\mathrm{Cr}}_{2}{\mathrm{Te}}_{4}$ single crystals. It exhibits bad-metallic behavior and anomalous Hall effect (AHE) below a weak-itinerant paramagnetic-to-ferrimagnetic transition ${T}_{c}\ensuremath{\sim}123$ K. The linear scaling between the anomalous Hall resistivity ${\ensuremath{\rho}}_{xy}$ and the longitudinal resistivity ${\ensuremath{\rho}}_{xx}$ implies that the AHE in $\mathrm{Fe}{\mathrm{Cr}}_{2}{\mathrm{Te}}_{4}$ is most likely dominated by an extrinsic skew-scattering mechanism rather than an intrinsic KL or an extrinsic side-jump mechanism, which is supported by our Berry phase calculations.