自旋轨道转矩(SOT: spin-orbit torques)是利用自旋轨道耦合产生的自旋流对磁性材料的磁矩施加转矩，从而实现信息的存储。本项目拟研究L10-MnGa/非磁金属异质结中的SOT，主要包括：（1）通过调节L10-MnGa的结构和磁性参数，研究L10-MnGa的自旋扩散长度、反常霍尔系数等对SOT的影响。（2）通过调节非磁性层的厚度、晶体结构、合金化、氧化程度等，研究非磁性层的自旋轨道耦合、自旋霍尔效应、界面Rashba效应等对SOT的影响。（3）通过探测在多变量场环境下由Dzyaloshinskii-Moriya interaction（DMI）诱导的磁畴壁的结构、成核、运动等，阐明DMI影响SOT的物理机制。（4）实验构筑出基于高效能SOT的新型自旋电子器件。本项目的研究内容将有助于人们深入理解SOT的物理机制,促进SOT在磁存储以及自旋电子学领域的发展和应用。

The spin-orbit torques (SOT) arises from the spin-orbit coupling (SOC) which create a spin-current and then act a spin torque on the magnetization of a ferromagnet, realizing the information storage. In this project, we will investigate the SOT in L10-MnGa/non-ferromagnetic metal (NM) heterostructures, and the research work in is composed of four parts: i) Modulating the magnetic and structural characters of L10-MnGa, we will investigate the influence of L10-MnGa on the SOT, including the spin diffusion length, the spin conductivity and the anomalous Hall coefficients; ii) Modulating the variety, thickness, resistivity, alloying and oxidation level, we will investigate the influencing mechanisms of NM on the SOT, including the SOC of NM, the spin Hall effect, the interfacial Rashba effect and the spin diffusion length. iii) With probing the textures, nucleation and motion of the Dzyaloshinskii-Moriya interaction (DMI) induced magnetic domain walls in multi-variable fields, we will clarify the influencing mechanisms of DMI on the SOT. iv) With modulating the structural properties, magnetic properties and DMI in L10-MnGa/NM heterostructures, we will experimentally fabricate new spintronics devices based on the SOT. It has important significance for the basic research on the physical mechanisms of SOT, promoting the development and application of SOT in the fields of magnetic information storage and spintronics.