305 citations · 433 across the 9 of their papers we have counts for
5 papers · 1 filter
On the phonon dispersion relation of single-crystalline --FeSe
Khalil Zakeri, Tobias Engelhardt, Thomas Wolf +1
We report on the phonon spectrum probed at the --FeSe(001) surface by means of high-resolution electron energy-loss spectroscopy (HREELS). Single crystals of --FeSe are cleav…
Unconventional pairing in single FeSe layers
Jasmin Jandke, Fang Yang, Patrik Hlobil +6
The pairing mechanism in iron-based superconductors is believed to be unconventional, i.e. not phonon-mediated. The achieved transition temperatures Tc in these superconductors are…
Temperature Dependence of Magnetic Excitations: Terahertz Magnons above the Curie Temperature
H. J. Qin, Kh. Zakeri, A. Ernst +1
When an ordered spin system of a given dimensionality undergoes a second order phase transition the dependence of the order parameter i.e. magnetization on temperature can be well-…
Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
Kh. Zakeri, Y. Zhang, J. Prokop +4
The influence of the Dzyaloshinskii-Moriya interaction on the spin-wave dispersion in an Fe double layer grown on W(110) is measured for the first time. It is demonstrated that the…
Probing of the interfacial Heisenberg and Dzyaloshinskii--Moriya exchange interaction by magnon spectroscopy
Khalil Zakeri
This Topical Review presents an overview of the recent experimental results on the quantitative determination of the magnetic exchange parameters in ultrathin magnetic films and mu…