论文标题
准二维制品中的各向异性传输和量子振荡5：非平凡带拓扑的证据
Anisotropic transport and quantum oscillations in the quasi-one-dimensional TaNiTe5: Evidence for the nontrivial band topology
论文作者
论文摘要
过去的十年见证了各种物质的拓扑状态，并具有独特的非平凡乐队拓扑结构。到目前为止，所研究的大多数材料具有二维或三维电子结构，只有少数例外，这些例外是寄主准二维（准1D）拓扑电子特性。在这里，我们为准1d telluride tanite5中的Dirac Fermions提供了明确的证据。我们表明其运输行为是高度各向异性的，我们通过量子振荡测量观察到非平凡的浆果相。第一原理计算进一步证实了非平凡的带拓扑。我们的结果可能有助于指导未来对这个新的准三元葡萄源性家族中对拓扑状态的追求。
The past decade has witnessed the burgeoning discovery of a variety of topological states of matter with distinct nontrivial band topologies. Thus far, most of materials studied possess two-dimensional or three-dimensional electronic structures, with only a few exceptions that host quasi-one-dimensional (quasi-1D) topological electronic properties. Here we present the clear-cut evidence for Dirac fermions in the quasi-1D telluride TaNiTe5. We show that its transport behaviors are highly anisotropic and we observe nontrivial Berry phases via the quantum oscillation measurements. The nontrivial band topology is further corroborated by first-principles calculations. Our results may help to guide the future quest for topological states in this new family of quasi-1D ternary chalcogenides.
