二维DyTe3中的双电荷密度波及其对磁输运性质的不同影响
Dual Charge-Density-Waves in Two-dimensional DyTe3 and Their Distinct Impacts on Magneto-Transport Properties
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中文总结 AI 辅助
研究二维材料DyTe3中低温共存的两种正交电荷密度波CDW1与CDW2，发现二者对磁输运性质有不同影响，CDW2会显著增强磁阻并产生多带非线性霍尔响应，为多重CDW的输运研究提供模型体系。
中文摘要 AI 辅助
电荷密度波（CDWs）是由电子电荷密度周期性调制与晶格畸变耦合形成的宏观量子态。尽管已有大量研究，但CDW存在时电磁输运性质的演化仍未得到充分探索。本文报道了低温下DyTe3中两种正交CDW（CDW1和CDW2）共存对其电子输运性质的影响。重要的是，在当前实验条件下，CDW1相变前后未观测到明显的磁输运异常；而CDW2的出现则导致磁阻急剧增强，并产生多带主导的非线性霍尔响应。这些结果表明，DyTe3中的CDW1和CDW2存在本质差异，以定性不同的方式影响其电子输运，确立了DyTe3作为准二维材料中多重CDW输运效应的模型体系。
英文摘要
Charge-density-waves (CDWs) are macroscopic quantum states defined by periodic modulations in electronic charge density coupled with lattice distortions. Despite significant research efforts, the evolution of electromagnetic transport properties in the presence of CDWs remains largely unexplored. Here, we report the effects of two orthogonal CDWs (CDW1 and CDW2) coexisting at low-temperature in DyTe3 on its electronic transport properties. Importantly, we find that while no clear magnetotransport anomaly is resolved across CDW1 transition under the present experimental conditions, the emergence of CDW2 drives a drastic enhancement in magnetoresistance and a multiband-governed nonlinear Hall response. These results demonstrate that CDW1 and CDW2 in DyTe3 are fundamentally different and impact its electronic transport in qualitatively distinct ways, establishing DyTe3 as a model system for understanding the transport consequences of multiple CDWs in quasi-two-dimensional materials.
发表机构
- Michigan State University（密歇根州立大学）
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