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Helmuth Berger

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Helmuth Berger

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Giant Kohn Anomaly and the Phase Transition in Charge Density Wave ZrTe3

Nonmonotonic pseudogap in high-T-c cuprates

Spontaneous exciton condensation in 1T-TiSe2: BCS-like approach

Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters

Crystal field and low energy excitations measured by high resolution RIXS at the L-3 edge of Cu, Ni and Mn

Observation of Two Nondispersive Magnetic Excitations in NiO by Resonant Inelastic Soft-X-Ray Scattering

Interplay of electronic correlations and lattice instabilities in BaVS3

High-field magnetization of a two-dimensional spin frustration system, Ni-5(TeO3)(4)X-2 (X = Br, Cl)

Splitting in the Fermi surface of ZrTe3: A surface charge density wave system

Infrared investigation of the phonon spectrum in the frustrated spin cluster compound FeTe2O5Cl