论文标题
压力诱导的超导性超导性在基于thallium的拓扑材料TLBI（S1-XSEX）2中延伸到拓扑相变延伸2
Pressured-induced superconductivity extending across the topological phase transition in thallium-based topological materials TlBi(S1-xSex)2
论文作者
论文摘要
超导性和拓扑的共存具有实现异国物质量子状态的潜力。在这里，我们报告说，三种基于thallium的材料在高压中引起的超导性，涵盖了从正常绝缘体（TLBIS2）到拓扑绝缘子（TLBISE2）（TLBISE2）的相变，该过渡通过DIRAC半学（TLBISE）。通过将压力提高到60 GPA，我们观察到最大TC值在6.0-8.1 K处的超导相图。我们的密度功能性理论计算揭示了所有三种化合物的超导性阶段的拓扑表面状态。我们的研究铺平了探索拓扑超导性和拓扑相变的道路。
The coexistence of superconductivity and topology holds the potential to realize exotic quantum states of matter. Here we report that superconductivity induced by high pressure in three thallium-based materials, covering the phase transition from a normal insulator (TlBiS2) to a topological insulator (TlBiSe2) through a Dirac semimetal (TlBiSeS). By increasing the pressure up to 60 GPa, we observe superconductivity phase diagrams with maximal Tc values at 6.0-8.1 K. Our density-functional theory calculations reveal topological surface states in superconductivity phases for all three compounds. Our study paves the path to explore topological superconductivity and topological phase transitions.
