Magnetic Topological Semimetal Phase with Electronic Correlation Enhancement in SmSbTe

TL;DR

This paper investigates SmSbTe, a magnetic topological semimetal, revealing its unique combination of antiferromagnetism, electron correlation enhancement, and Dirac nodal-line fermions, offering a platform for exploring exotic quantum phenomena.

Contribution

It uncovers the magnetic topological semimetal phase in SmSbTe with enhanced electron correlations and complex magnetic properties, expanding understanding of magnetism and topology interplay.

Findings

Presence of antiferromagnetism with possible magnetic frustration

Enhancement of electronic correlations in SmSbTe

Existence of Dirac nodal-line fermions in the material

Abstract

The ZrSiS family of compounds hosts various exotic quantum phenomena due to the presence of both topological nonsymmorphic Dirac fermions and nodal-line fermions. In this material family, the LnSbTe (Ln= lanthanide) compounds are particularly interesting owing to the intrinsic magnetism from magnetic Ln which leads to new properties and quantum states. In this work, the authors focus on the previously unexplored compound SmSbTe. The studies reveal a rare combination of a few functional properties in this material, including antiferromagnetism with possible magnetic frustration, electron correlation enhancement, and Dirac nodal-line fermions. These properties enable SmSbTe as a unique platform to explore exotic quantum phenomena and advanced functionalities arising from the interplay between magnetism, topology, and electronic correlations.