8 papers
Coupled spin dynamics in epitaxial trilayer heterostructures of ferrimagnetic garnet
A. Del Giacco, M. J. Gross, O. Wojewoda +9
The magnetization dynamics of an all-garnet trilayer consisting of Y3Fe5O12/Y3Fe3Al2O12/Y3Fe5O12 (YIG/YIAG/YIG) is analysed. The two magnetic YIG layers, separated by a 4 nm thick…
Ultrafast formation of a large dynamic magnetic soliton
Ondřej Wojewoda, Sina Mayr, Miela J. Gross +17
Nonlinear magnetization dynamics offers a rich variety of phenomena ranging from bistability to chaos. Here, we report the ultrafast formation of a dynamic magnetic soliton in thin…
Sculpting Spin-Wave Landscapes via Curvature of 2D Magnonic Crystals
Ondřej Wojewoda, Robert Kraft, Olha Bezsmertna +11
Engineering the dispersion relation is one of the key ingredients enabling the application of spin waves in computational elements. One way to engineer the spin-wave band structure…
Laterally Differentiated Polymorphs: a route to multifunctional nanostructures
Pete E. Lauer, Kensuke Hayashi, Yuichiro Kunai +10
Multifunctional materials can exhibit emergent behavior from the coupling of two or more different properties. For example, coupling between magnetic and ferroelectric order enable…
Precise control of crystallography and magnetism in focused-ion-beam transformed iron-nickel thin films
Jakub Holobrádek, Libor Vojáček, Ondřej Wojewoda +2
Focused ion beam irradiation of metastable FeNi thin films grown on Cu(100) substrates results in the localized transformation of the originally paramagnetic, face-ce…
Ultrafast propagation of magnon-polaritons
Ondřej Wojewoda, Miela J. Gross, Jan Klíma +11
The manipulation of magnetization lies at the heart of spintronic and magnonic technologies, with the ultimate performance of such systems limited by the velocity at which magnetic…
Mie-enhanced micro-focused Brillouin light scattering with wavevector resolution
Jakub Krčma, Ondřej Wojewoda, Martin Hrtoň +4
Magnons, the quanta of spin waves, are magnetic excitations of matter spanning through the entire crystal's Brillouin zone and covering a wide range of frequencies ranging from sub…
Deeply nonlinear excitation of self-normalised exchange spin waves
Qi Wang, Roman Verba, Björn Heinz +9
Spin waves are ideal candidates for wave-based computing, but the construction of magnetic circuits is blocked by a lack of an efficient mechanism to excite long-running exchange s…