Scaling and field-induced crossover of the anomalous Hall effect in SrRuO3

2011/05/16 by Haham, Noam, Shperber, Yishai, Schultz, Moty +3
#FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.1105.3059

Abstract

We measure the anomalous Hall effect (AHE) resistivity ρ_xy in thin films of the itinerant ferromagnet SrRuO₃. At low temperatures, the AHE coefficient R_s varies with ρ_xx² in agreement with side jumps and Berry phase models. At higher temperatures, R_s reaches a peak and then changes sign just below T_c. We find that for all films studied R_s scales with resistivity in the entire ferromagnetic phase. SrRuO₃ films with very low residual resistivity exhibit field induced sign changes of the AHE at low temperatures, suggesting an ω_c τ related crossover.

Related

• Scattering-dependent transport of SrRuO3 films: From Weyl fermion transport to hump-like Hall effect anomaly
• Sign reversal of Berry curvature triple driven by magnetic phase transition in a ferromagnetic polar metal
• Spontaneous in-plane anomalous Hall response observed in a ferromagnetic oxide
• Exploring the Anomalous Nernst Effect in SrRuO₃
• Manipulating Momentum-Space and Real-Space Topological States in Metallic Strontium Ruthenate Ultrathin Films