Electronic structure of bulk SmSbTe*

Recently, the nonsymmorphic compound CeSbTe was studied experimentally and computationally to determine its crystal structure and its electronic structure, due to the interest in topological semimetals [1]. The material was found to contain several four-fold degenerate points, including a Dirac crossing near the Fermi level, which are topologically protected. A similar, as-yet unstudied material, SmSbTe, has recently been synthesized, and initial experiments show that it has the same space group as CeSbTe. The calculated band structures show the same topologically protected crossings near the Fermi level. This means that SmSbTe could be another candidate to study exotic magnetic phases. We present calculated band structures for SmSbTe in different magnetic phases with spin-orbit coupling and LDA+U corrections [2,3] included.

References
[1] Schoop, et al., Sci. Adv. 5 eaav9743 (2018)
[2] G. Kresse, J. Furthmüller, Comput. Mater. Sci. 6, 15-50 (1996)
[3] S.L. Dudarev, et al., Phys. Rev. B 57, 1505 (1998)