Evolution of superconductivity and magnetic order in LaRu$_3$Si$_2$ by rare earth and transition metal substitutions.

The recent discovery of high temperature superconductivity in iron based materials has renewed interest to condensed matter physics. Although its mechanism is not yet settled completely, it should have a close relationship with the electron correlations. The compound LaRu$_{3}$Si$_{2}$ shows superconductivity with a transition temperature $T_{\mathrm{c}}=$ 7.8 K. Recent study indicates that electron correlations play a significant role for superconductivity in this Kagome lattice of Ru and the Ru band dominates at the Fermi level, similar to Fe-band in iron-superconductors. Superconductivity in LaRu$_{3}$Si$_{2}$ has been found robust against the local paramagnetic moment. We will present our study on the evolution of superconductivity and magnetic order in LaRu$_{3}$Si$_{2}$ due to substitutions of Tm, a J$=$6 (J is the total angular momentum) ion with a maximum ordered moment of 7 $\mu_{\mathrm{B}}$, and transition metals by measuring magnetic, transport and Neutron scattering properties.