Fig. 4
From: Unique crystal field splitting and multiband RKKY interactions in Ni-doped EuRbFe4As4
Effect of Ni-doping. a Total and projected density of states of EuRb[Fe1−xNixAs]4. The panels from top to bottom are undoped (x = 0), x = 0.0625, x = 0.125, and x = 1 (EuRbNi4As4), respectively. b–e Imaginary part of bare electron susceptibilities (nesting function). From b to e are undoped, 6.25%-doped, 12.5%-doped and fully doped EuRbFe4As4 respectively
