Unusual evolution of the conduction-electron state in CexLa1- xB6 from non-fermi liquid to fermi liquid

We report unusual evolution of the conduction-electron state in the localized $f$ electron system ${\mathrm{Ce}}_{x}{\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{B}}_{6}$ from normal electron state to heavy Fermi liquid (FL) state through local FL and non-FL states with increasing Ce concentration and/or with increasing magnetic field. The effective mass of quasiparticle or the coefficient $A$ of ${T}^{2}$ term of resistivity is found to increase divergently near the boundary between FL state and non-FL state. The features of the non-FL state are also different from those of the typical non-FL systems previously observed or theoretically predicted.