Evidence for a Ru${}^{4+}$ Kondo Lattice in LaCu${}_3$Ru${}_4$O${}_{12}$

Stefan Riegg, Sebastian Widmann, Betina Meir +7

Rare $d$-electron derived heavy-fermion properties of the solid-solution series LaCu${}_3$Ru${}_x$Ti${}_{4-x}$O${}_{12}$ were studied for $1\le x\le 4$ by resistivity, susceptibility,…