Spin dynamics of $YbR{h}_{2}S{i}_2$ observed by Electron Spin Resonance

Abstract

Below the Kondo temperature $T_{\mathrm{K}}$ electron spin resonance (ESR) usually is not observable from the Kondo-ion itself because the characteristic spin fluctuation energy results in a huge width of the ESR line. The heavy fermion metal YbRh${}_2$Si${}_2$ seems to be an exceptional case where definite ESR spectra show characteristic properties of the Kondo-ion Yb${}^{3+}$ well \textit{below} $T_{\mathrm{K}}$. We found that the spin dynamics of YbRh${}_2$Si${}_2$, as determined by its ESR relaxation, is spatially characterized by an anisotropy of the zero temperature residual relaxation only.

Presented at NanoRes 2004, Kazan; 4 pages, 3 Figures

References in corpus (3)

• Locally critical quantum phase transitions in strongly correlated metals
• The break up of heavy electrons at a quantum critical point
• Magnetic-Field Induced Quantum Critical Point in YbRh${}_2$Si${}_2$

Cited by in corpus (8)

• Phenomenology of ESR in heavy fermion systems: Fermi liquid and non-Fermi liquid regime
• Evolution of the Kondo state of YbRh2Si2 probed by high field ESR
• Magnetic susceptibility of YbRh2Si2 and YbIr2Si2 on the basis of a localized 4f electron approach
• ESR of YbRh2Si2 and 174YbRh2Si2 : local and itinerant properties
• Anisotropic electron spin resonance of YbIr2Si2
• Crystal electric field parameters for Yb3+ ion in YbRh2Si2
• Low temperature properties of the Electron Spin Resonance in YbRh2Si2
• Angle-dependent electron spin resonance of YbRh${}_2$Si${}_2$ measured with planar microwave resonators and in-situ rotation