Suppression and Reemergence of Directional Transport across the Ferromagnetic Transition in SrRuO 3

SrRuO 3 is a canonical itinerant ferromagnet that continues to serve as a fertile platform for exploring spin‐orbit coupled transport and topological responses in correlated oxide metals. Here, we investigate a (110)‐oriented epitaxial SrRuO 3 thin film on DyScO 3 , where crystallographic anisotropy allows for symmetry‐resolved charge transport along orthogonal in‐plane directions. We uncover two principal findings. First, the resistance above the Curie temperature T c ,on ≈ 165 K exhibits strong anisotropy, consistent with directionally dependent spin‐fluctuation scattering. Below T c ,on , this anisotropy nearly vanishes, despite persistent structural inequivalence, due to isotropic electron‐magnon and electron‐electron scattering processes. Second, the application of a magnetic field reveals a striking directional contrast in the linear magnetoresistance ( MR ): it remains negative and saturates along [001], but changes sign and becomes positive along below T 0 = 145 K. In contrast, the quadratic MR term is identical for both directions and peaks near , where the ordinary Hall coefficient crosses zero, consistent with carrier compensation under a two‐band scenario. A sign change in the anomalous Hall signal at is consistent with a temperature‐dependent redistribution of Berry‐curvature contributions near the Fermi level. These results establish ferromagnetic ordering as the primary driver of the observed directional magnetotransport in SrRuO 3 .