Impact of the ground-state $4f$ symmetry for anisotropic $cf$-hybridization in the heavy fermion superconductor CeNi${}_2$Ge${}_2$

H. Fujiwara, Y. Nakatani, H. Aratani +18

We report the ground-state symmetry of the Ce $4f$ states in the heavy fermion superconductor CeNi${}_2$Ge${}_2$, yielding anisotropic $cf$-hybridization between the Ce $4f$ states…