论文标题
在室温下拓扑非类别反铁磁铁的全电动切换
All-electrical switching of a topological non-collinear antiferromagnet at room temperature
论文作者
论文摘要
非电 - 抗磁磁性Weyl半法，结合了零流浪场和超快自旋动力学的优势以及大型异常霍尔效应和Weyl Fermions的手性异常，引起了广泛的兴趣。但是，尚未报道在室温下对此类系统的全电动控制，这是朝着实际应用迈出的关键步骤。在这里，使用大约5*10^{6} a/cm^{2}的小写作电流，我们意识到非电流抗通过抗fiferromagnet MN3SN的全电流诱导的确定性切换，在SI/SIO2/MN3SN/MN3SN/ALOX结构中，在室温下具有强烈的读数，而无需外部磁性磁场和插入式插入式电脑。我们的模拟表明，转换起源于MN3SN本身中电流诱导的固有非共线自旋轨道。我们的发现为发展拓扑抗铁磁旋转的发展铺平了道路。
Non-collinear antiferromagnetic Weyl semimetals, combining the advantages of a zero stray field and ultrafast spin dynamics as well as a large anomalous Hall effect and the chiral anomaly of Weyl fermions, have attracted extensive interests. However, the all-electrical control of such systems at room temperature, a crucial step toward practical applications, has not been reported. Here using a small writing current of around 5*10^{6} A/cm^{2}, we realize the all-electrical current-induced deterministic switching of the non-collinear antiferromagnet Mn3Sn with a strong readout signal at room temperature in the Si/SiO2/Mn3Sn/AlOx structure, without external magnetic field and injected spin current. Our simulations reveal that the switching is originated from the current-induced intrinsic non-collinear spin-orbit torques in Mn3Sn itself. Our findings pave the way for the development of topological antiferromagnetic spintronics.
