94 citations · 521 across the 20 of their papers we have counts for
12 papers · 1 filter
Self-induced Floquet magnons in magnetic vortices
Christopher Heins, Lukas Körber, Joo-Von Kim +6
Driving condensed matter systems with periodic electromagnetic fields can result in exotic states not found in equilibrium. Termed Floquet engineering, such periodic driving applie…
Curvature-induced parity loss and hybridization of magnons: Exploring the connection of flat and tubular magnetic shells
Felipe Brevis, Pedro Landeros, Jürgen Lindner +2
This paper delves into the connection between flat and curvilinear magnetization dynamics. For this, we numerically study the evolution of the magnon spectrum of rectangular wavegu…
Nontrivial Aharonov-Bohm effect and alternating dispersion of magnons in cone-state ferromagnetic rings
Vera Uzunova, Lukas Körber, Agapi Kavvadia +4
Soft magnetic dots in the form of thin rings have unique topological properties. They can be in a vortex state with no vortex core. Here, we study the magnon modes of such systems…
Pattern recognition with a magnon-scattering reservoir
Lukas Körber, Christopher Heins, Tobias Hula +4
Magnons are elementary excitations in magnetic materials and undergo nonlinear multimode scattering processes at large input powers. In experiments and simulations, we show that th…
Tailoring crosstalk between localized 1D spin-wave nanochannels using focused ion beams
Vadym Iurchuk, Javier Pablo-Navarro, Tobias Hula +8
1D spin-wave conduits are envisioned as nanoscale components of magnonics-based logic and computing schemes for future generation electronics. `A-la-carte methods of versatile cont…
Mode splitting of spin waves in magnetic nanotubes with discrete symmetries
Lukas Körber, István Kézsmárki, Attila Kákay
We investigate how geometry influences spin dynamics in polygonal magnetic nanotubes. We find that lowering the rotational symmetry of nanotubes by decreasing the number of planar…
Numerical reverse engineering of general spin-wave dispersions: Bridge between numerics and analytics using a dynamic-matrix approach
Lukas Körber, Attila Kákay
Modern problems in magnetization dynamics require more and more the numerical determination of the spin-wave spectra and -dispersion in magnetic systems where analytic theories are…
Symmetry- and curvature effects on spin waves in vortex-state hexagonal nanotubes
Lukas Körber, Michael Zimmermann, Sebastian Wintz +13
Analytic and numerical studies on curved magnetic nano-objects predict numerous exciting effects that can be referred to as magneto-chiral effects, which do not originate from intr…
Finite-element dynamic-matrix approach for spin-wave dispersions in magnonic waveguides with arbitrary cross section
Lukas Körber, Gwendolyn Quasebarth, Andreas Otto +1
We present a numerical approach to efficiently calculate spin-wave dispersions and spatial mode profiles in magnetic waveguides of arbitrarily shaped cross section with any non-col…
Time refraction of spin waves
K. Schultheiss, N. Sato, P. Matthies +9
We present an experimental study of time refraction of spin waves propagating in microscopic waveguides under the influence of time-varying magnetic fields. Using space- and time-r…
Nonlocal stimulation of three-magnon splitting in a magnetic vortex
Lukas Körber, Katrin Schultheiss, Tobias Hula +4
We present a combined numerical, theoretical and experimental study on stimulated three-magnon splitting in a magnetic disk in the vortex equilibrium state. Our micromagnetic simul…
Domain wall-based spin-Hall nano-oscillators
N. Sato, K. Schultheiss, L. Körber +7
In the last decade, two revolutionary concepts in nano magnetism emerged from research for storage technologies and advanced information processing. The first suggests the use of m…