Crystal electric field parameters for Yb3+ ion in YbRh2Si2

The tetragonal crystal electric field parameters for Yb3+ ion in YbRh2Si2 are determined from the analysis of the literature data on angle-resolved photoemission, inelastic neutron scattering and electron paramagnetic resonance.Comment: 8 pages, 3 figures, 4 table

Magnetic properties and spin kinetics in Kondo lattices

© Kazan Federal University (KFU). We present a theoretical model to describe unusual properties of Kondo lattices. The influence of the Kondo effect on the static magnetic susceptibility and electron spin resonance (ESR) parameters is studied in a simple molecular field approximation together with a scaling perturbative approach. Theoretical expressions well agree with the ESR and static magnetic susceptibility experimental data

Spin Relaxation in Kondo Lattice Systems with Anisotropic Kondo Interaction

© 2016 Springer Science+Business Media New YorkWe study the influence of the Kondo effect on the spin relaxation in systems with anisotropic Kondo interaction at temperatures both high and low as compared with the static magnetic field. In the absence of the Kondo effect, the electron spin resonance linewidth is not narrowed in the whole temperature range due to the high anisotropy of the Kondo interaction. The Kondo effect leads to the universal energy scale, which regulates the temperature and magnetic field dependence of different kinetic coefficients and results in a mutual cancelation of their singular parts in a collective spin mode

Spin kinetics in Kondo lattice with heavy fermions

We investigated the spin dynamics in the heavy fermion compounds YbRh2Si2and YbIr2Si2. The contributions of the resonant and nonresonant parts of the total transverse magnetization to the electron spin resonance (ESR) parameters are analyzed for different orientations of the static and microwave magnetic fields. It is shown that at high temperatures, when the Kondo effect is absent, the nonresonant terms may be essential in the case of the perpendicular orientation of the static magnetic field to the crystal symmetry axis. In the presence of the Kondo effect the nonresonant parts do not make a significant contribution to the ESR parameters for any configuration of the magnetic fields

Static Magnetic Susceptibility of the Systems with Anisotropic Kondo Interaction

We theoretically investigated the static magnetic susceptibility in the heavy fermion compounds YbRh(Formula presented.)Si(Formula presented.) and YbIr(Formula presented.)Si(Formula presented.). The molecular field approximation together with the renormalization of the Kondo interaction by the high-energy conduction electron excitations results in the Curie-Weiss law and Van Vleck susceptibility with temperature-dependent Curie and Weiss parameters. © 2014 Springer-Verlag Wien

Scaling corrections to the static magnetic susceptibility of the heavy fermions compounds YbRh2Si2and YbIr2Si2

We theoretically investigated the static magnetic susceptibility in the heavy fermion compounds YbRh2Si2and YbIr2Si2. The molecular field approximation together with the renormalization of the Kondo interaction by the high energy conduction electrons excitations result in the Curie-Weiss law and Van Vleck susceptibility with temperature dependent Curie and Weiss parameters

Static magnetic susceptibility of the systems with anisotropic kondo interaction

© Springer-Verlag Wien 2014. We theoretically investigated the static magnetic susceptibility in the heavy fermion compounds YbRh2Si2 and YbIr2Si2. The molecular field approximation together with the renormalization of the Kondo interaction by the highenergy conduction electron excitations results in the Curie–Weiss law and Van Vleck susceptibility with temperature-dependent Curie and Weiss parameters