Ghosh Srikrishna, Manchon Aurelien, Železný Jakub
Institute of Physics, Czech Academy of Sciences, Cukrovarnická 10, 162 00 Praha 6, Czech Republic.
CINaM, Aix-Marseille Université, CNRS, Marseille, France.
Phys Rev Lett. 2022 Mar 4;128(9):097702. doi: 10.1103/PhysRevLett.128.097702.
Ferromagnetic spin valves and tunneling junctions are crucial for spintronics applications and are one of the most fundamental spintronics devices. Motivated by the potential unique advantages of antiferromagnets for spintronics, we theoretically study here junctions built out of noncollinear antiferromagnets. We demonstrate a large and robust magnetoresistance and spin-transfer torque capable of ultrafast switching between parallel and antiparallel states of the junction. In addition, we show that a new type of self-generated torque appears in the noncollinear junctions.
铁磁自旋阀和隧道结对于自旋电子学应用至关重要，并且是最基本的自旋电子学器件之一。受反铁磁体在自旋电子学中潜在独特优势的启发，我们在此从理论上研究了由非共线反铁磁体构成的结。我们展示了一种大且稳健的磁电阻以及能够在结的平行和反平行状态之间实现超快切换的自旋转移转矩。此外，我们表明在非共线结中会出现一种新型的自产生转矩。
