Role of spin-orbit coupling on the electronic structure and properties of SrPtAs
Role of spin-orbit coupling on the electronic structure and properties of SrPtAs
复制标题
自旋轨道耦合对SrPtAs电子结构和性能的影响
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Freeman
中科院分区：
文献类型：
--
作者：
S. Youn;S. Rhim;D. Agterberg;M. Weinert;A. Freeman
用全势线性缀加平面波方法研究了自旋轨道耦合对层状无铁磷属元素化物超导体SrPtAs电子结构的影响。研究发现，自旋轨道耦合增强了分层结构中费米速度、电导率和等离子体频率的各向异性。自旋-轨道相互作用和PtAs层中缺乏二维反演之间的关系进行了分析内紧束缚哈密顿量的基础上的第一性原理计算。最后，能带结构表明电子掺杂可以提高$T_c$。
The effect of spin-orbit coupling on the electronic structure of the layered iron-free pnictide superconductor, SrPtAs, has been studied using the full potential linearized augmented plane wave method. The anisotropy in Fermi velocity, conductivity and plasma frequency stemming from the layered structure are found to be enhanced by spin-orbit coupling. The relationship between spin-orbit interaction and the lack of two-dimensional inversion in the PtAs layers is analyzed within a tight-binding Hamiltonian based on the first-principles calculations. Finally, the band structure suggests that electron doping could increase $T_c$.