Phenomenology of ESR in heavy-fermion systems: Fermi-liquid and non-Fermi-liquid regimes
Phenomenology of ESR in heavy-fermion systems: Fermi-liquid and non-Fermi-liquid regimes
We extend and apply a recent theory of the dynamical spin response of Anderson lattice systems to interpret ESR data on YbRh2Si2. Starting within a semiphenomenological Fermi liquid description at low temperatures T < Tx (a crossover temperature) and low magnetic fields B << Bx, we extend the description to …