论文标题
拓扑半学候选NDSBTE的电子和磁性
Electronic and Magnetic Properties of Topological Semimetal Candidate NdSbTe
论文作者
论文摘要
ZRSIS型材料代表了一个大型材料家族，具有拓扑非词性狄拉克式和节点线费米子的异常共存。作为一组特殊的ZRSI-FAMILY，LNSBTE（LN = Lanthanide稀土）化合物为探索新的量子相提供了独特的机会，这是由于LN引起的固有磁性。在这里，我们报告了NDSBTE的单晶体生长和表征，NDSBTE是一种未开发的LNSBTE化合物。 NDSBTE具有抗铁磁基态，具有与其他已知LNSBTE相似的场驱动的元磁转变，但在已知的LNSBTE复合体中，以115 MJ/mol $ K^2 $为特征的具有明显增强的电子相关性，其特征在于115 MJ/mol $ K^2 $。此外，我们的运输研究揭示了磁性和近代定位的特征的耦合。所有这些发现都建立了NDSBTE作为观察新现象的新平台，该平台是由磁性，拓扑和电子相关性之间的相互作用引起的。
ZrSiS-type materials represent a large material family with unusual coexistence of topological nonsymmorphic Dirac fermions and nodal-line fermions. As a special group of ZrSiS-family, LnSbTe (Ln = Lanthanide rare earth) compounds provide a unique opportunity to explore new quantum phases due to the intrinsic magnetism induced by Ln. Here we report the single crystal growth and characterization of NdSbTe, a previously unexplored LnSbTe compound. NdSbTe has an antiferromagnetic ground state with field-driven metamagnetic transitions similar to other known LnSbTe, but exhibits distinct enhanced electronic correlations characterized by large a Sommerfeld coefficient of 115 mJ/mol $K^2$, which is the highest among the known LnSbTe compounds. Furthermore, our transport studies have revealed the coupling with magnetism and signatures of Kondo localization. All these findings establish NdSbTe as a new platform for observing novel phenomena arising from the interplay between magnetism, topology, and electron correlations.
