Davide Maccariello William Legrand Nicolas Reyren Fernando Ajejas Karim Bouzehouane Sophie Collin Jean-Marie George Vincent Cros 1 Albert Fert
HAL science ouverte, Electrical Signature of Noncollinear Magnetic Textures in Synthetic Antiferromagnets – Archive ouverte HAL (archives-ouvertes.fr)
By using magnetic multilayers with compensated perpendicular anisotropy and antiferromagnetic coupling between neighboring layers, we show that it is possible to electrically detect the signature of non-collinear magnetization textures in synthetic antiferromagnet systems. With the support of magnetic force microscopy and micromagnetic simulations, we enlighten the phenomena behind the magnetotransport measurements. The observed magnetoresistive response can be phenomeno logically described by two competing main contributions: a GMR-like interlayer contribution and an intralayer contribution due to in-plane magnetic moments present in any non-collinear magnetic texture. Relying on both temperature and field-dependence measurements, we show that the details of the magnetic textures can be quantitatively determined through electrical measurements.
