论文标题
LAA/LABI异质结构中的非平凡乐队拓扑的签名
Signatures of non-trivial band topology in LaAs/LaBi heterostructure
论文作者
论文摘要
在本文中，我们使用密度功能理论（DFT）研究了极端磁性（XMR）材料LAA和LABI的异质结构中的非平凡拓扑特征。发现所提出的异质结构是动态稳定的，并显示出具有非平凡的Z_ {2}拓扑不变的散装带和表面的狄拉克锥。此外，还计算其电子和孔载体密度比以研究具有XMR效应的可能性。发现异质结构中的电子和孔几乎得到了补偿，从而促进了它是XMR研究的合适候选者。
In this article, we investigate non-trivial topological features in a heterostructure of extreme magnetoresistance (XMR) materials LaAs and LaBi using density functional theory (DFT). The proposed heterostructure is found to be dynamically stable and shows bulk band inversion with non-trivial Z_{2} topological invariant and a Dirac cone at the surface. In addition, its electron and hole carrier densities ratio is also calculated to investigate the possibility to possess XMR effect. Electrons and holes in the heterostructure are found to be nearly compensated, thereby facilitating it to be a suitable candidate for XMR studies.
