Nature of 4fmagnetism inCe1−xLaxPd2Si2

The results of magnetic-susceptibility, resistivity, and specific-heat measurements on ${\mathrm{Ce}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{La}}_{\mathrm{x}}$ ${\mathrm{Pd}}_2$ ${\mathrm{Si}}_2$ show that the magnetic ordering temperature $T_N$ decreases linearly with increasing x with the dominance of Kondo compensation effects even in the magnetically ordered regime, also for x=0.9; this indicates that the periodicity of the Ce ions does not play any role in deciding the interesting characteristics for ${\mathrm{CePd}}_2$ ${\mathrm{Si}}_2$, particularly the breakdown of de Gennes scaling. Our results place the interpretations of recent quasielastic linewidth measurements on the competition between magnetism and Kondo effect on a firm footing.