自旋-轨道耦合驱动的自旋相关输运和新颖磁现象

正确理解并调控磁性材料和非磁性材料中的自旋-轨道耦合驱动的自旋相关输运和新奇磁性，不但是一个具有挑战性的重要物理问题，同时也具有广阔的应用前景。在已经具备对自旋轨道耦合物理的良好研究基础之上，我们在这里将利用分子束外延技术制备高质量的非磁性和磁性薄膜和异质结构，利用微纳加工手段制备微纳电子器件，并用多种先进测量手段对如下几个由自旋轨道耦合驱动的重要科学问题开展深入和系统的研究：（1）建立非磁金属中自旋霍尔效应的普适标度关系。（2）探索Bi/Ni双层膜中的奇异超导电性及其微观机制；（3）研究单晶铁磁金属/非磁金属异质结构中由于自旋-轨道耦合引起的新奇磁性和磁结构；（4）研究自旋-轨道力矩和自旋霍尔磁电阻效应并澄清其内在物理机制；（5）寻找具有更大自旋霍尔角的新材料，并探索增强自旋霍尔效应的方法和机制，推动有潜在应用价值的新型磁性功能器件和正在兴起的自旋电子学的发展。

It is a challenging issue with broad application perspective to understand correctly and manipulate the spin-dependent transport and novel magnetic properties induced by the spin-orbit coupling in magnetic and non-magnetic materials. Based on our expertise and solid research background, we propose to address the following important issues driven by the spin-orbit coupling: (1) With high quality epitaxial grown films and heterostructures, we try to establish the proper scaling of the spin hall effect; (2) Explore the peculiar superconductivity in Bi/Ni bilayer and try to clarify the mechanism behind; (3) Explore novel magnetic properties and spin structures induced by the spin-orbit coupling in single-crystalline ferromagnetic metal/non-magnetic metal heterostructure; (4) Investigate the spin-orbit torque and spin-Hall magentoresistance, and try to clarify their physical mechanisms; (5) Search new materials with larger spin-hall angle meanwhile find new ways to enhance the spin-Hall effect, to promote the development of potential new magnetic devices and the emerging spintronics.