Ac Susceptibility and Static Magnetization Measurements of CeRu$_2$Si$_2$ at Small Magnetic Fields and Ultra Low Temperatures

D. Takahashi; S. Abe; H. Mizuno; D. A. Tayurskii; K. Matsumoto; H. Suzuki; Y. Ãnuki

doi:10.1103/PhysRevB.67.180407

paper

Ac Susceptibility and Static Magnetization Measurements of CeRu $_{2}$ Si $_{2}$ at Small Magnetic Fields and Ultra Low Temperatures

arXiv:cond-mat/0212238 · doi:10.1103/PhysRevB.67.180407

Abstract

The magnetic properties of CeRu $_{2}$ Si $_{2}$ at microkelvin temperatures (down to 170 $I^¼$ K) and ultra small magnetic fields ( $0.02 \sim 6.21$ mT) are investigated experimentally for the first time. The simultaneously measured ac susceptibility and static magnetization show neither evidence of the magnetic ordering, superconductivity down to the lowest temperatures nor conventional Landau Fermi-Liquid behavior. The results imply the magnetic transition temperature in undoped CeRu $_{2}$ Si $_{2}$ is very close to absolute 0 K. The possibility for proximity of CeRu $_{2}$ Si $_{2}$ to the quantum critical point without any doping is discussed.

4 pages, 3 figures; accepted for publication in Phys. Rev. B (Rapid Communication) and scheduled issue on 1st of May 2003

Ac Susceptibility and Static Magnetization Measurements of CeRu2​Si2​ at Small Magnetic Fields and Ultra Low Temperatures

Abstract

Ac Susceptibility and Static Magnetization Measurements of CeRu $_{2}$ Si $_{2}$ at Small Magnetic Fields and Ultra Low Temperatures