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The recent discovery of unconventional surface state pairs, which give riseto Fermi arcs and spin textures, in antiferromagnetically ordered NdBi raisedthe interest in rare-earth monopnictides. Several scenarios ofantiferromagnetic order have been suggested to explain the origin of thesestates with some of them being consistent with the presence of non-trivialtopologies. In this study, we use angle-resolved photoemission spectroscopy(ARPES) and density-functional-theory (DFT) calculations to investigate theelectronic structure of NdSb. We found the presence of distinct domains thathave different electronic structure at the surface. These domains correspond todifferent orientations of magnetic moments in the AFM state with respect to thesurface. We demonstrated remarkable agreement between DFT calculations andARPES that capture all essential changes in the band structure caused bytransition to a magnetically ordered state.

Directional effects of antiferromagnetic ordering on the electronic structure in NdSb