Unexpected changes in the band structure within AFM1 state of CeBi
arXiv:2409.08125 · doi:10.1038/s43246-024-00692-0
Abstract
We perform angle-resolved photoemission spectroscopy (ARPES) measurements in conjunction with density functional theory (DFT) calculations to investigate the evolution of the electronic structure of CeBi upon a series of antiferromagnetic (AFM) transitions. We find evidence for a new AFM transition in addition to two previously known from transport studies. We demonstrate the development of an additional Dirac state in the (+-+-) ordered phase and a transformation of unconventional surface-state pairs in the (++--) ordered phase. This revises the phase diagram of this intriguing material, where there are now three distinct AFM states below TN in zero magnetic field instead of two as it was previously thought.
16 pages, 4 figures
References in corpus (26)
- Maximally-localized generalized Wannier functions for composite energy bands
- WannierTools: An open-source software package for novel topological materials
- Maximally-localized Wannier functions for entangled energy bands
- Use of frit-disc crucibles for routine and exploratory solution growth of single crystalline samples
- Compensated semimetal LaSb with unsaturated magnetoresistance
- New Materials Physics
- Topological semimetals and topological insulators in rare earth monopnictides
- Presence of Exotic Electronic Surface States in LaBi and LaSb
- Tunable VUV laser based spectrometer for Angle Resolved Photoemission Spectroscopy (ARPES)
- Evidence of topological insulator state in the semimetal LaBi
- Possible Weyl fermions in the magnetic Kondo system CeSb
- Experimental determination of the topological phase diagram in Cerium monopnictides
- Asymmetric mass acquisition in LaBi - a new topological semimetal candidate
- Tunable Electronic Structure and Topological Properties of (=Ce, Pr, Gd, Sm, Yb; =Sb, Bi)
- Emergence of Fermi arcs and novel magnetic splitting in an antiferromagnet
- Tunable Electronic Structure and Surface States in Rare Earth Mono-Bismuthides with Partially Filled f Shell
- Devil's staircase transition of the electronic structures in CeSb
- Rare-earth monopnoctides -- family of antiferromagnets hosting magnetic Fermi arcs
- Unusual change in the Dirac-cone energy band upon two-step magnetic transition in CeBi
- Directional effects of antiferromagnetic ordering on the electronic structure in NdSb
- Antiferromagnetic topological insulator with selectively gapped Dirac cones
- Prediction of Spin Polarized Fermi Arcs in Quasiparticle Interference of CeBi
- Unusual surface states associated with the PT-symmetry breaking and antiferromagnetic band folding in NdSb
- Origin of the exotic electronic states in antiferromagnetic NdSb
- Unconventional Surface State Pairs in a High-Symmetry Lattice with Anti-ferromagnetic Band-folding
- Long-range magnetic order induced surface state in GdBi and DyBi