  Initiated by the discovery of topological insulators, topologically
non-trivial materials, more specifically topological semimetals and metals have
emerged as new frontiers in the field of quantum materials. In this work, we
perform a systematic measurement of EuMg2Bi2, a compound with antiferromagnetic
transition temperature at 6.7 K, observed via electrical resistivity,
magnetization and specific heat capacity measurements. By utilizing
angle-resolved photoemission spectroscopy in concurrence with first-principles
calculations, we observe Dirac cones at the corner and the zone center of the
Brillouin zone. From our experimental data, multiple Dirac states at G and K
points are observed, where the Dirac nodes are located at different energy
positions from the Fermi level. Our experimental investigations of detailed
electronic structure as well as transport measurements of EuMg2Bi2 suggest that
it could potentially provide a platform to study the interplay between topology
and magnetism.
