465 citations · 2.1k across the 45 of their papers we have counts for
5 papers · 1 filter
Pressure dependence of phonon modes across the tetragonal to collapsed tetragonal phase transition in CaFe2As2
R. Mittal, R. Heid, A. Bosak +14
The pressure dependence of a large number of phonon modes in CaFe2As2 with energies covering the full range of the phonon spectrum has been studied using inelastic x-ray and neutro…
Strong phonon softening without Fermi surface nesting
D. Lamago, M. Hoesch, M. Krisch +4
Interactions with electronic excitations can soften and/or broaden phonons. They are greatly amplified at wavevectors Q+- that connect parallel (nested) sheets of the Fermi surface…
Inelastic X-ray Scattering Study of superconducting SmFeAs(OF) Single Crystals: Evidence for Strong Momentum-Dependent Doping-Induced Renormalizations of Optical Phonons
M. Le Tacon, T. R. Forrest, Ch. Rüegg +10
We report inelastic x-ray scattering experiments on the lattice dynamics in SmFeAsO and superconducting SmFeAsOF single crystals. Particular attention was paid to…
Phonon surface mapping of graphite: disentangling quasi--degenerate phonon dispersions
A. Grüneis, J. Serrano, A. Bosak +8
The two-dimensional mapping of the phonon dispersions around the point of graphite by inelastic x-ray scattering is provided. The present work resolves the longstanding issue r…
Giant Kohn anomaly and the phase transition in charge density wave ZrTe_3
Moritz Hoesch, Alexey Bosak, Dmitry Chernyshov +2
A strong Kohn anomaly in ZrTe_3 is identified in the mostly transverse acoustic phonon branch along the modulation vector q_P with polarization along the a* direction. This soft mo…