论文标题
掺杂的手性拓扑半学的三维时间反转拓扑超导
Three-dimensional time reversal invariant topological superconductivity in doped chiral topological semimetals
论文作者
论文摘要
手性拓扑半学宿主在晶体对称性的保护下托管多胎归化频带交叉点。在本文中，我们建议最近发现的Space ofer of 198中的手性拓扑半学（其中的一部分是超导掺杂，可能是时间反向不变拓扑超导体的新候选者。通过调查带有非零Chern数量的频带交叉点周围的费米表面，我们阐明了手学拓扑半学的非平凡拓扑会影响其超导状态，并显示出在$ s_ \ s_ \ pm pm $ $ -PM $ - 波与Surface Majorana Majorana fermions配对中的拓扑超导性。我们进一步证明，拓扑超导性受到单位间音子介导的电子电子相互作用的青睐。
Chiral topological semimetals host multifold degenerate band crossing points under the protection of crystalline symmetries. In this paper, we suggest that the recently discovered chiral topological semimetals in space group 198, parts of which are superconducting upon doping, can be new candidates of time reversal invariant topological superconductors. By investigating the Fermi surfaces around the band crossing points that carry nonzero Chern numbers, we clarify how the nontrivial topology of chiral topological semimetals affects their superconducting state and show the existence of topological superconductivity in $s_\pm$-wave pairing with surface Majorana fermions. We further demonstrate that the topological superconductivity is favored by the inter-unit-cell phonon-mediated electron-electron interaction.
