论文标题
室温性手性切换在狂热的薄膜中
Room-temperature chirality switching in a helimagnetic thin film
论文作者
论文摘要
磁磁矩被螺旋序列的呼射结构具有与螺旋的触角相对应的，称为手性（或螺旋）的内部自由度。手性似乎很健壮，因此对于下一代磁记忆来说是有希望的。虽然最近通过在低温下使用电流在导电helimagnet中使用电流的磁场扫描最近实现了手性控制，但在实用应用中必须解决诸如低工作温度和笨拙的控制序列之类的问题。另一个问题是薄膜制造，它可以基于Helimagnets开发自旋设备。在这里，我们在室温下以薄膜MNAU $ _2 $ helimagnetic导体在室温下通过电流脉冲进行手性切换。结果证明了基于Helimagnet的旋转术的可行性，可以克服上述所有问题。
Helimagnetic structures, in which the magnetic moments are spirally ordered, host an internal degree of freedom called chirality (or helicity) corresponding to the handedness of the helix. The chirality seems quite robust against disturbances and is therefore promising for next-generation magnetic memory. While the chirality control was recently achieved by the magnetic field sweep with the application of an electric current at low temperature in a conducting helimagnet, problems such as low working temperature and cumbersome control sequence have to be solved in practical applications. Another issue is the thin film fabrication that enables the development of spintronic devices based on helimagnets. Here we show chirality switching by electric current pulses at room temperature in a thin-film MnAu$_2$ helimagnetic conductor. The result demonstrates the feasibility of helimagnet-based spintronics that can overcome all the above problems.
