Low Temperature Electron Spin Resonance of the Kondo Ion in a Heavy Fermion Metal: YbRh2Si2

Abstract

The electron spin resonance (ESR) study on single crystals of the heavy fermion metal YbRh2Si2 was presented. The study showed non-Fermi liquid behavior related to a close antiferromagnetic quantum critical point. It was found that the spin dynamics as well as the static magnetic properties of the Yb3+ spins were consistent with the results of nuclear magnetic resonance and magnetic susceptibility.