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arXiv · 2510.27634

Evolution of Magnetoresistance in the magnetic topological semimetals NdSbxTe2-x

Santosh Karki Chhetri·Rabindra Basnet·Krishna Pandey·Gokul Acharya·Sumaya Rahman·Md Rafique Un Nabi·Dinesh Upreti·Hugh O. H. Churchill·Jin Hu
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Abstract

Magnetic topological semimetals LnSbTe (Ln = lanthanide elements) provide a platform to study the interplay of structure, magnetism, topology, and electron correlations. Varying Sb and Te compositions in LnSbxTe2-x can effectively control the electronic, magnetic, and transport properties. Here, we report the evolution of transport properties with Sb and Te contents in NdSbxTe2-x, (0 < x < 1). Our work reveals nonmonotonic evolution in magnetoresistance with varying composition stoichiometry. Specifically, reducing Sb content x leads to strong negative magnetoresistance up to 99.9%. Such a strong magnetoresistance, which is likely attributed to the interplay between structure, magnetism, and electronic bands, establishes this material as a promising platform for investigating topological semimetal for future device applications.

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Santosh Karki Chhetri, Rabindra Basnet, Krishna Pandey, Gokul Acharya, Sumaya Rahman, Md Rafique Un Nabi, Dinesh Upreti, Hugh O. H. Churchill, Jin Hu. 2025-10-31. Evolution of Magnetoresistance in the magnetic topological semimetals NdSbxTe2-x. https://doi.org/10.1103/lh2y-nws6

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