Room Temperature In-Plane Magnetotransport Properties in the Chiral Antiferromagnet Mn \(_{3}\) Sn

Chiral antiferromagnet Mn \(_{3}\) Sn exhibits large Berry-curvature-induced anomalous Hall and Nernst effect despite its vanishing net magnetization, attracting wide, interdisciplinary attention. This material is suited to investigate the interplay between the magnetic Weyl semimetal state and the underlying spin structure. Here, we report in-plane angular dependence of magnetotransport properties at room temperature. The anisotropic magnetoresistance and planar Hall effect show nearly two-fold periodicity under low fields, whereas higher-order oscillations grow with increasing field. Our findings suggest that the interplay between chiral anomaly and field-induced spin texture deformation may lead to complex magnetotransport anisotropy beyond the typical two-fold oscillation, offering valuable insight that helps understand the chiral-anomaly-driven magnetotransport in Weyl magnets.