掺杂：二维半导体到半金属的转变

近几年,人们突破了对半金属块体材料研究的局限性。作为二维材料原型的石墨烯的发现,得力于其不同的结构和物理性能在材料学能够广泛应用。截止目前,二维材料已经囊括了半导体、半金属、金属和拓扑绝缘体等。但固有二维半金属材料种类少、不稳定,导致研究的局限性,所以用新方法寻求稳定的半金属材料非常必要。文章描述了通过掺杂半导体单层结构获得了新型半金属材料的理论,说明二维无磁半导体在自旋电子学中的潜在价值。

In recent years,people have broken through the limitations of research on half-metal bulk materials.The discovery of graphene as a prototype of two-dimensional materials,thanks to its different structure and physical properties,can be widely used in materials science.So far,two-dimensional materials have included semiconductors,half-metals,metals,and topological insulators.However,the inherently two-dimensional half-metallic materials have few types and are unstable,which leads to the limitation of research.Therefore,it is necessary to use new methods to find stable half-metallic materials.This paper describes the theory of novel half-metal materials obtained by doping a semiconductor single-layer structure,illustrating the potential value of two-dimensional non-magnetic semiconductors in spin electronics.