Evidence for a ferromagnetic quantum critical point in URhGe doped with Ru

TL;DR

This study investigates how doping URhGe with Ru affects its ferromagnetic order, providing evidence for a quantum critical point at a specific doping level through various measurements.

Contribution

It presents experimental evidence for a ferromagnetic quantum critical point in URh_{1-x}Ru_{x}Ge near x=0.38, advancing understanding of quantum phase transitions in correlated metals.

Findings

Quantum critical point at x=0.38 identified

Ferromagnetic order suppressed near critical doping

Measurements confirm continuous evolution of magnetic properties

Abstract

We have investigated the evolution of ferromagnetic order in the correlated metal series URh_{1-x}Ru_{x}Ge. Magnetization, transport and specific heat measurements provide convincing evidence for a ferromagnetic quantum critical point at the critical concentration x_{c} = 0.38. Here we report ac-susceptibility and magnetization measurements on selected samples with Ru doping concentrations near the critical point.