Andrea Severing

Crystal-field ground state of the noncentrosymmetric superconductor CePt3Si: A combined polarized soft x-ray absorption and polarized neutron study

We determined the crystal-field split Hunds rule ground state of the non-centrosymmetric heavy fermion superconductor CePt3Si with polarization dependent soft X-ray absorption spectroscopy (XAS) and polarized neutron scattering. We are also able to give the sequence of the crystal-field states from the temperature evolution of the linear dichroic signal in the XAS. The quantitative analysis of the XAS temperature dependence together with the neutron transition energies complete the identification of the crystal-field level scheme.

Crystal-field and Kondo-scale investigations of CeMIn5 (M = Co, Ir, and Rh): A combined x-ray absorption and inelastic neutron scattering study

Linear-polarized soft-x-ray absorption (XAS) and inelastic neutron scattering (INS) experiments have been performed on

Correlation between ground state and orbital anisotropy in heavy fermion materials

\text{Ce}M{\text{In}}_{5}

CeRu4Sn6: a strongly correlated material with nontrivial topology.

with

Direct bulk-sensitive probe of 5f symmetry in URu2Si2

M=\text{Rh}

Ce 3p hard x-ray photoelectron spectroscopy study of the topological Kondo insulator CeRu4Sn6

, Ir, and Co to determine the crystal-field scheme and characteristic Kondo temperatures

Intermediate valence in single crystalline Yb

{T}^{\ensuremath{\ast}}

_2

for the hybridization between

Si

4f

_2

and conduction electrons. The ground-state wave functions are determined from the polarization-dependent soft-XAS data at the cerium