Magnetic-to-nonmagnetic transition in the ferromagnetic heavy fermion compoundCeRu2Ge2at high pressures

A zero-temperature magnetic-to-nonmagnetic transition has been investigated in the heavy-fermion ferromagnet ${\mathrm{CeRu}}_2{\mathrm{Ge}}_2$ from electrical-resistance measurements at pressures up to 15 GPa and temperatures down to 60 mK. We found that the magnetic-to-nonmagnetic phase boundary exists at around $P_c\sim 10\hspace{0.5em}\mathrm{GPa}$. The resistivity shows the quadratic temperature variation expected for the conventional Fermi liquid at low temperatures near $P_c.$ In the present pressure range, neither the metamagnetic nor the superconducting transition was observed at least down to 60 mK.