标题： TiSe$_{2}$纳米片中各向异性三维弱局域化的证据 显示英文标题

标题： Evidence of anisotropic three-dimensional weak-localization in TiSe$_{2}$ nanoflakes

摘要： TiSe$_2$是一种典型的过渡金属二硫化物，以其电荷密度波序而闻名。 在本研究中，我们在低温下对剥离的 TiSe$_2$纳米薄片中观察到了一种不寻常的各向异性负磁阻。 与大多数其他过渡金属二硫化物中报道的负磁阻不同，我们的结果无法用传统的二维弱局域效应或科恩多效应来解释。 对数据的全面分析表明，TiSe$_2$薄片中观察到的各向异性负磁阻很可能是由三维弱局域效应引起的。 我们的发现有助于更深入地理解 TiSe$_2$中的相位相干输运过程。 显示英文摘要

摘要： TiSe$_2$ is a typical transition-metal dichalcogenide known for its charge-density wave order. In this study, we report the observation of an unusual anisotropic negative magnetoresistance in exfoliated TiSe$_2$ nanoflakes at low temperatures. Unlike the negative magnetoresistance reported in most other transition-metal dichalcogenides, our results cannot be explained by either the conventional two-dimensional weak localization effect or the Kondo effect. A comprehensive analysis of the data suggests that the observed anisotropic negative magnetoresistance in TiSe$_2$ flakes is most likely caused by the three-dimensional weak localization effect. Our findings contribute to a deeper understanding of the phase-coherent transport processes in TiSe$_2$.