论文标题
二维铁磁半金属janus v2asp单层
Two-Dimensional Ferromagnetic Half-Metallic Janus V2AsP Monolayer
论文作者
论文摘要
二维（2D）铁磁材料呈现出有希望的自旋设备的候选物，而在费米能水平上具有100％自旋极化的半金属材料对于许多基于自旋的设备都非常需要。近年来，第二次Janus材料由于破坏对称性引起的出色特性而引起了极大的关注。在这里，使用密度函数理论，我们报告说Janus V2ASP单层展示了迷人的铁磁半金属特征。鉴于缺乏虚频声子，它在动态稳定。半金属间隙约为0.38 eV，V2ASP单层的自旋分裂约为1.34EV。有趣的是，拉伸应变为4.9％可以诱导其从铁磁到抗铁磁状态的相变。此外，居里温度（TC）随着压缩应变的增加而增强。所有吸引人的特性使半金属的Janus V2ASP单层成为2D Spintronic应用的有前途的材料。
Two-dimensional (2D) ferromagnetic materials present promising candidates for spintronic devices, and the half-metallic materials with 100% spin polarization at Fermi energy level are highly desired for many spin-based devices. 2D Janus materials have attracted great attention in recent years due to their excellent properties induced by breaking the symmetry. Here, using the density functional theory, we report that the Janus V2AsP monolayer demonstrates a charming ferromagnetic half-metallic feature. It is dynamically stable in view of the absence of imaginary frequency phonon. The half-metallic gap is about 0.38 eV and the spin splitting of about 1.34eV for the V2AsP monolayer. Interestingly, a tensile strain of 4.9% can induce it to undergo a phase transition from ferromagnetic to anti-ferromagnetic state. Moreover, the Curie temperature (Tc) enhances with the increase of compressive strain. All there appealing properties make the half-metallic Janus V2AsP monolayer a promising material for 2D spintronic applications.
