Electronic band structure of a nodal line semimetal candidate ErSbTe
arXiv:2508.07422 · doi:10.1103/vf45-2k7m
Abstract
The LnSbTe family is well known for hosting a plethora of intriguing characteristics stemming from its crystalline symmetry, magnetic structure, 4f electronic correlations and spin orbit coupling (SOC) phenomena. In this paper, we have systematically studied the bulk electrical and thermodynamic properties and electronic structure of the nodal line semimetal candidate ErSbTe using angle resolved photoemission spectroscopy (ARPES) corroborated with first principles based theoretical band structure calculations with and without considering the effect of SOC, a critical factor dictating the band degeneracy which depends on the choice of the Ln atom. Corroborative temperature dependent susceptibility, electrical resistivity and thermodynamic measurements, coherently exhibit paramagnetic to antiferromagnetic phase transition approximately at 1.94 K, and another sharp anomaly at 1.75 K. The zero field cooled resistivity measurement does not show the characteristic hump like feature in the other LnSbTe materials. The electronic band structure of ErSbTe, exhibits a diamond shaped Fermi surface. Along the high symmetry direction GX, electronic bands are projected to cross over the Fermi energy, necessitated by the nonsymmorphic symmetry of the system. The other crossing along this direction is gapped, which evolves along the momentum space reaching its maximum along the GM direction.
8 pages, 4 figures
References in corpus (13)
- Classification of stable three-dimensional Dirac semimetals with nontrivial topology
- Classification of reflection symmetry protected topological semimetals and nodal superconductors
- Magnetic and electronic properties of a topological nodal line semimetal candidate: HoSbTe
- Observation of Fermi arcs and Weyl nodes in a non-centrosymmetric magnetic Weyl semimetal
- Topological electronic structure in the antiferromagnet HoSbTe
- Observation of multiple nodal-lines in SmSbTe
- Possible pressure-induced topological quantum phase transition in the nodal line semimetal ZrSiS
- Coexistence of Weyl semimetal and Weyl nodal loop semimetal phases in a collinear antiferromagnet
- Observation of gapless nodal-line states in NdSbTe
- On the magnetic structures of 1:1:1 stoichiometric topological phases LnSbTe (Ln = Pr, Nd, Dy and Er)
- Electronic structure in a rare-earth based nodal-line semimetal candidate PrSbTe
- Observation of anisotropic Dirac cones in the topological material Ti2Te2P
- Low-lying Electronic Structure of Rare-Earth Based Topological Nodal Line Semimetal Candidate DySbTe