Einleitung

Spin dynamics in a structurally ordered non-Fermi-liquid compound: YbRh2Si2

“…NFL behavior is observed in a number of f-electron systems as pronounced deviations from conventional Landau Fermi-liquid properties. These include anomalous temperature dependences of the electrical resistivity [∆ρ = ρ(T ) − ρ(T =0) ∝ T α , 1 α < 2] and the f-electron specific heat coefficient (C el /T ∝ − ln T ) [2,3]. This contrasts with the Fermi-liquid behavior seen in ordinary metals (∆ρ ∝ T 2 , C el /T = const.).…”