super exchange is responsible for the Néel-type AFM ordering observed in the $ab$ plane with a rather weak inter-layer magnetic coupling whose nature is dependent on the A atom [@guo2014coupling].

More recently, new members have been added to this family by substituting the rare earth elements with lanthanides such as Europium and Ytterbium. Whereas EuMnBi$_2$ appears to be very similar to its rare earth sister compounds [@PhysRevB.90.075109], YbMnBi$_2$ appears to have richer behavior and has been proposed as a prospective candidate for type II Weyl semi-metal (WSM) [@borisenko2015time]. Unlike most WSMs discovered so far that are non-centrosymmetric systems (TaAs, NbAs, NbP, TaP, SrSi$_2$, etc) with broken inversion symmetry, YbMnBi$_2$ has been proposed to be a potential WSM with broken time reversal symmetry (TRS). A magnetic WSM has continued to be elusive to date, with the possible exception of potential WSM phases in pyrochlore iridates [@sushkov2015optical] and magnetic heuslers under magnetic field [@hirschberger2016chiral]. In contrast to the other members of the AMnBi$_2$ family, ARPES has shown a Fermi surface that appears to be continuous with the hole-like lenses touching the electron-like pockets at what has been interpreted to be the Weyl nodes. It should be noted, that the band structure calculations 