Weyl Nodal Point–Line Fermion in Ferromagnetic Eu<sub>5</sub>Bi<sub>3</sub>
Weyl Nodal Point–Line Fermion in Ferromagnetic Eu<sub>5</sub>Bi<sub>3</sub>
On the basis of ab initio calculations and a low-energy effective k· p model, we propose a Weyl nodal point-line (WNPL) fermion, composed of 0D Weyl points and a 1D Weyl nodal line, in the ferromagnetic material Eu5Bi3. In the absence of spin-orbital coupling (SOC), the spin-up bands host a …