![]() Thus, microscopic investigations showing the intended current driven alignment of the staggered magnetization directly are essential. Additionally, external strain supported Néel vector manipulation in Mn 2Au was demonstrated 18, 19. However, it later became clear that alternative mechanisms such as current pulse induced heat effects 14, 15, electromigration 16, and rapid quenching induced structural and magnetic modifications 17 can result in resistance modifications similar to the ones reported as well. The interest in such concepts has grown strongly with the prediction of a so called Néel spin-orbit torque (NSOT) in metallic collinear AFMs with a specific symmetry, which is expected to rotate the spins of the AFM sublattices in a perpendicular orientation with respect to a driving bulk current 7.Ĭorrespondingly, within the first generation of experiments on both known compounds with the required structure and AFM ordering, CuMnAs and Mn 2Au, current pulse induced reversible resistance modifications were reported as evidence for NSOT driven Néel vector rotation 8, 9, 10, 11, 12, 13. ![]() ![]() This approach takes advantage of the intrinsically fast THz dynamics of AFMs 5 and their stability against external magnetic fields (see Ref. Novel storage concepts in spintronics based on antiferromagnets (AFMs) propose to encode information by the direction of the alignment of the staggered magnetization or Néel vector 1, 2, 3, 4. ![]()
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