37 citations · 96 across the 3 of their papers we have counts for
6 papers · 1 filter
Strong electron correlations in FeSb2: An optical investigation and comparison with RuSb2
A. Herzog, M. Marutzky, J. Sichelschmidt +4
We report investigations of the optical properties of the narrow gap semiconductor FeSb2 in comparison with the structural homolog RuSb2. In the infrared region the latter shows in…
Peculiar long-range superexchange in Cu2A2O7 (A = P, As, V) as a key element of the microscopic magnetic model
O. Janson, A. A. Tsirlin, J. Sichelschmidt +3
A microscopic magnetic model for alpha-Cu2P2O7 is evaluated in a combined theoretical and experimental study. Despite a dominant intradimer coupling J1, sizable interdimer coupling…
Magnetic susceptibility of YbRh2Si2 and YbIr2Si2 on the basis of a localized 4f electron approach
A. S. Kutuzov, A. M. Skvortsova, S. I. Belov +6
We consider the local properties of the Yb3+ ion in the crystal electric field in the Kondo lattice compounds YbRh2Si2 and YbIr2Si2. On this basis we have calculated the magnetic s…
Evolution of the Kondo state of YbRh2Si2 probed by high field ESR
U. Schaufuß, V. Kataev, A. A. Zvyagin +6
An electron spin resonance (ESR) study of the heavy fermion compound YbRh2Si2 for fields up to ~ 8 T reveals a strongly anisotropic signal below the single ion Kondo temperature T_…
Observation of an optical non-Fermi-liquid behavior in the heavy fermion state of YbRhSi
S. Kimura, J. Sichelschmidt, J. Ferstl +3
We report far-infrared optical properties of YbRhSi for photon energies down to 2 meV and temperatures 0.4 -- 300 K. In the coherent heavy quasiparticle state, a linear…
Quasi-one-dimensional spin chains in CuSiO3: an EPR study
J. Sichelschmidt, A. Loidl, M. Baenitz +3
Temperature dependent EPR studies were performed on a single crystal of CuSiO3.This recently discovered compound is isostructural with the spin-Peierls compound CuGeO3. The EPR sig…