65 citations · 87 across the 3 of their papers we have counts for
5 papers
Effect of topology on quasi-particle interactions in the Weyl semimetal WP
Dirk Wulferding, Peter Lemmens, Florian Büscher +3
We compare two crystallographic phases of the low-dimensional WP to better understand features of electron-electron and electron-phonon interactions in topological systems. The…
Magnon bound states vs. anyonic Majorana excitations in the Kitaev honeycomb magnet -RuCl
Dirk Wulferding, Youngsu Choi, Seung-Hwan Do +5
The pure Kitaev honeycomb model harbors a quantum spin liquid in zero magnetic fields, while applying finite magnetic fields induces a topological spin liquid with non-Abelian anyo…
Systematic Raman study of optical phonons in BaCuO ( = Y, Dy, Gd, Sm, Nd): Antiferromagnetic coupling strength versus lattice parameters
Silvia Müllner, Wayne Crump, Dirk Wulferding +4
We present a systematic study of the interplay between lattice parameters and the energy of the optical phonons as well as the antiferromagnetic coupling strength, , in the high…
Flat-band spin dynamics and phonon anomalies of the saw-tooth spin-chain system FeO(SeO)
V. P. Gnezdilov, Yu. G. Pashkevich, V. S. Kurnosov +11
Fe ions form saw-tooth like chains along the axis of the oxo-selenite FeO(SeO) and an onset of long-range magnetic order is observed for temperatur…
Lattice and electronic anomalies of CaFe_2As_2 studied by Raman spectroscopy
K. -Y. Choi, D. Wulferding, P. Lemmens +3
We report inelastic light scattering experiments on CaFe_2As_2 in the temperature range of 4 to 290 K. In in-plane polarizations two Raman-active phonon modes are observed at 189 a…