Electronic structure of a semimetal NdSb across the magnetic transition

Vol 1 2021 - 142092
Oral
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Abstract

The rare-earth monopnictides (REM) family hosts complex magnetic ground states and has recently attracted intense research interest due to its unusual extreme magnetoresistance and the potential presence of topological surface states. Here, we have reported a systematic investigation of the Fermi surface and the band dispersion of a semimetal NdSb in the paramagnetic phase as well as the antiferromagnetic phase (TN ~ 15 K) using a high-resolution angle-resolved photoemission spectroscopy technique complemented by density functional theory calculations. Our data reveal a clear distinct band evolution phenomenon due to the antiferromagnetic phase transition. Most importantly, a complex band structure is observed at the zone center which is potentially due to the strong hybridization induced by the magnetic phase transition. Our experimental study opens up a new path to understand the intricate interplay between magnetism and its effect on the electronic structure in this REM family.

Institutions
  • 1 Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
  • 2 Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA
  • 3 MPA-Q, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 4 Institute for Materials Science, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
Track
  • Correlated topological phases
Keywords
Topology and magnetism
rare-earth compound
angle resolved photoemission spectroscopy
Density Functional Theory
band structure