Variational Monte Carlo Study of Flat Band Ferromagnetism –Application to CeRh<sub>3</sub>B<sub>2</sub>–
Variational Monte Carlo Study of Flat Band Ferromagnetism –Application to CeRh<sub>3</sub>B<sub>2</sub>–
A new mechanism for ferromagnetism in CeRh_3B_2 is proposed on the basis of variational Monte Carlo results. In a one-dimensional Anderson lattice where each 4f electron hybridizes with a ligand orbital between neighboring Ce sites, ferromagnetism is stabilized due to a nearly flat band which is a mixture of conduction …