We investigate the role of domain walls in the ultrafast magnon dynamics of an
antiferromagnetic NiO single crystal in a pump-probe experiment with variable pump photon …

In experiment and theory, we resolve the mechanism of ultrafast optical magnon excitation in
antiferromagnetic NiO. We employ time-resolved optical two-color pump-probe …

Exchange interactions determine the correlations between microscopic spins in magnetic
materials. Probing the dynamics of these spin correlations on ultrashort length and time …

The understanding of how the sub-nanoscale exchange interaction evolves in macroscale
correlations and ordered phases of matter, such as magnetism and superconductivity …

Terahertz magnetic fields with amplitudes of up to 0.4 Tesla drive magnon resonances in
nickel oxide while the induced dynamics is recorded by femtosecond magneto-optical …

Antiferromagnetic materials have been proposed as new types of narrowband THz
spintronic devices owing to their ultrafast spin dynamics. Manipulating coherently their spin …

The impulsive generation of two-magnon modes in antiferromagnets by femtosecond optical
pulses, so-called femto-nanomagnons, leads to coherent longitudinal oscillations of the …

We have studied the ultrafast magnon dynamics in an antiferromagnetic 3d-transition-metal
monoxide, nickel oxide (NiO), using optical pump-probe spectroscopy and terahertz time …

We demonstrate an approach for directly tracking antiferromagnetic (AFM) spin dynamics by
measuring ultrafast changes in a magnon resonance. We test this idea on the multiferroic …

Magnons are quantized collective spin-wave excitations in magnetically ordered materials.
Revealing the interactions among these collective modes is crucial for the understanding of …