We report the experimental investigation of quasi-one-dimensional (quasi-1D) Ta2PdSe6 single crystals by magnetotransport measurements under high magnetic fields up to 31 T. The crystals show large unsaturated magnetoresistance up to (1.8 × 105%) under 31 T at 1.6 K, accompanied by remarkable resistivity oscillations. The analysis of quantum oscillations reveals the existence of five Fermi pockets, consistent with theoretical calculations. Furthermore, our investigation suggested that band structure is modified by the electron correlations in Ta2PdSe6, which may provide a platform for exploring the interplay between electron effects and topological properties in quasi-1D materials.

中文翻译：

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准一维 Ta2PdSe6 中的大磁阻和非平凡费米表面拓扑

我们报告了在高达 31 T 的高磁场下通过磁输运测量对准一维（准 1D）Ta2PdSe6 单晶进行的实验研究。该晶体在 31 T、1.6 下表现出高达 (1.8 × 105%) 的大不饱和磁阻。 K，伴随着显着的电阻率振荡。量子振荡分析揭示了五个费米口袋的存在，与理论计算一致。此外，我们的研究表明，Ta2PdSe6 中的电子相关性改变了能带结构，这可能为探索准一维材料中电子效应和拓扑性质之间的相互作用提供一个平台。