论文标题
de haas-van alphen效应探测的分层tanite5中的三维拓扑半学相
Three-dimensional topological semimetal phase in layered TaNiTe5 probed by de Haas-van Alphen effect
论文作者
论文摘要
由于外来现象和可调的特性，分层的三维（3D）拓扑半学吸引了人们的注意力。在这里，我们报告了通过量子振荡在分层材料Tanite5单晶中3D拓扑半学相的实验证据。已经观察到了tanite5中的dimagnetism背景，已经观察到了强量子振荡。通过分析DE HAAS-VAN ALPHEN振荡，在含有磁转运测量的含义中提取了多周期振荡。此外，鉴定出具有3D费米表面的非平凡的“π”浆果相，表明在Tanite5中拓扑上的非平凡特征。此外，我们证明了Tanite5晶体的薄层是高度可行的，该机械剥落提供了一个平台来探索低维拓扑半学中的外来性质，并为纳米电视台的潜在应用铺平了道路。
Layered three-dimensional (3D) topological semimetals have attracted intensively attention due to the exotic phenomena and abundantly tunable properties. Here we report the experimental evidence for the 3D topological semimetal phase in layered material TaNiTe5 single crystals through quantum oscillations. Strong quantum oscillations have been observed with diamagnetism background in TaNiTe5. By analyzing the de Haas-van Alphen oscillations, multi-periodic oscillations were extracted, in content with magnetotransport measurements. Moreover, nontrivial "π" Berry phase with 3D Fermi surface is identified, indicating the topologically nontrivial feature in TaNiTe5. Additionally, we demonstrated the thin-layer of TaNiTe5 crystals is highly feasible by the mechanical exfoliation, which offers a platform to explore exotic properties in low dimensional topological semimetal and paves the way for potential applications in nanodevices.
