COMPETITION BETWEEN KONDO AND MAGNETIC POLARON STATES IN CE AND YB MONOPNICTIDES

Recently, it has been demonstrated that the long-range Coulomb interac tion is really important in the low carrier density strongly correlate d systems. This is particularly clear in Ce and Yb monopnictides from both the experimental and the theoretical standpoints. As a result, a Wigner crystal liquid enhanced by a weak magnetic polaron can exist at high temperature competing with the Kondo state, but it changes to a strong magnetic polaron lattice through various steps at low temperatu re. Recent developments are reviewed.