论文标题
拓扑超导体AUSN4：第一个主要研究
Topological Superconductor AuSn4: A first principle study
论文作者
论文摘要
拓扑半学，例如具有超导性的Weyl或Dirac半学，已成为一种新的拓扑材料，以实现和研究Majoraana fermion。本文报道了最近发现的拓扑超导体候选AUSN4的密度功能理论（DFT）计算出的大量电子带结构。该研究已在AUSN4上进行，考虑到两个空间组对称性。如前所述，AEA2和CCCE。这项研究进一步扩展到Z2不变性的计算。还映射了对应于与表面状态的频带相对应的费米表面。完整的研究表明，AUSN4是拓扑半学。在AUSN4上，这是文献中的第一份报告，该报告基于第一原则计算，显示了非平凡的带拓扑。
Topological semimetals such as Weyl or Dirac semimetals with superconductivity have emerged as a new class of topological materials to realize and study Majorana Fermion. This article reports the Density Functional Theory (DFT) calculated bulk electronic band structure of recently discovered topological superconductor candidate AuSn4. The study has been performed on AuSn4 considering two space groups symmetries viz. Aea2 and Ccce, as reported earlier. This study is further extended to the calculation of Z2 invariants. The Fermi surfaces corresponding to the bands, which are responsible for non-trivial band topology, along with the surface states, are also mapped. The complete study suggests that AuSn4 is a topological semimetal. On AuSn4, it is the first report in the literature showing the non-trivial band topology based on first-principle calculations.
