Abstract
Current-induced spin textures in antiferromagnets (AFMs) are of great importance and interest, not only for a detailed understanding of the underlying physical phenomena, but also for magnetization switching using AFMs in spintronics. Direct visualization of such spin textures in AFMs has remained elusive, however. This study uses a scanning photovoltage microscope to image current-induced spin accumulation in (001)- and (111)-oriented IrMn${}_{3}$. In contrast to the conventional spin Hall phenomena, significant out-of-plane spin accumulation is observed at the top surface in the (001) case. This work promotes AFM-based devices exploiting spin-orbit torque without a magnetic field.
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