论文标题
从MNG $ _ {2} $ o $ $ _ {4} $}中可能的磁性拓扑半金属状态进行的。
Ab initio study on the possible magnetic topological semimetallic state in MnMg$_{2}$O$_{4}$}
论文作者
论文摘要
我们根据第一原则计算研究了逆尖晶石化合物MNMG $ _ {2} $ o $ $ $ _ {4} $的电子状态。高旋转状态在钻石晶格上的MN离子中实现，导致该材料被发现是半金属半学的，少数自旋隙约为3EV，并且在Brillouin区域也有线节点。固有的异常霍尔电导率（AHC）也是假设刚性带结构的系统的化学电位的函数，发现最大值为200 s/cm的峰值结构，在高于费米水平的15 meV时，最大值为200 s/cm。还讨论了布里渊区的大AHC和浆果曲率之间的关系。
We study the electronic state of an inverse spinel compound MnMg$_{2}$O$_{4}$ based on first-principles calculations. The high-spin state is realized in Mn ions on the diamond lattice, resulting in that this material is found to be a half-metallic semimetal with the minority spin-gap about 3eV, and also with line nodes in the Brillouin zone. The intrinsic anomalous Hall conductivity (AHC) is also computed as a function of the chemical potential of the system assuming the rigid band structure, and is found to exhibit a peak structure with a maximum value of 200 S/cm at only 15 meV above the Fermi level. The relation between the large AHC and Berry curvature in the Brillouin zone is also discussed.
