Kriegner,1 K. Výborný,2 K. Olejníık,2 H. Reichlová,2 V. Novák,2 X. Marti,2 J. Gazquez,3 V. Saidl,1 P. Nemec,1 V.V. Volobuev,4,5 G. Springholz,4 V. Holý,1 T. Jungwirth2,6
(a) Cross-sectional HAADF image xis resolving the individual atomic columns of Mn (magenta) and Te (green). The inset shows the atomic positions including the Mn magnetic moments in the ordered antiferromagnetic state.
(b,c) Transverse (red) and longitudinal (blue) AMR measurements. Arrow in b indicates the initial angle and the direction of rotation.
(d) Transverse AMR measured after cooling in a magnetic field (BFC=2T) applied at an angle 𝜑B,FC and with the field kept on. The dashed line is a guide to the eye.
(e) Zero-field transverse AMR obtained after field-cooling (BFC=2 T) down to 5 K then removing the field and taking zero-field resistance measurements at 200 K. The grey line is a ∼ sin2𝜑B,FC least squares fit which fails to describe the details of the angular variation in the experimental data. On the other hand, the red line shows the least square fit of the multi-domain model calculations, which accurately reproduce the angular variation of the experimental data.