  The recent and exciting discovery of superconductivity in the hole-doped
infinite-layer nickelate Nd 1-{\delta} Sr {\delta} NiO 2 draws strong attention
to correlated quantum materials. From a theoretical view point, this new class
of unconventional superconducting materials provides an opportunity to unveil
new physics in correlated quantum materials. Here we study the temperature and
doping dependence of the local spectrum as well as the charge, spin and orbital
susceptibilities from first principles. By using ab initio LQSGW+DMFT
methodology, we show that onsite Hund's coupling in Ni-d orbitals gives rise to
multiple signatures of Hund's metallic phase in Ni-eg orbitals. The proposed
picture of the nickelates as an eg (two orbital) Hund's metal differs from the
picture of the Fe-based superconductors as a five orbital Hund's metal as well
as the picture of the cuprates as doped charge transfer insulators. Our finding
unveils a new class of the Hunds metals and has potential implications for the
broad range of correlated two orbital systems away from half-filling.
