Publications (14)
Nonreciprocal spin-wave dynamics in Pt/Co/W/Co/Pt multilayers
Krzysztof Szulc, Simon Mendisch, MichaÅ Mruczkiewicz +3
We present a detailed study of the spin-wave dynamics in single Pt/Co/W and double Pt/Co/W/Co/Pt ferromagnetic layer systems. The dispersion of spin waves was measured by wavevecto…
The Effect of Ga-Ion Irradiation on Sub-Micron-Wavelength Spin Waves in Yttrium-Iron-Garnet Films
Johannes Greil, Martina Kiechle, Adam Papp +8
We investigate the effect of focused-ion-beam (FIB) irradiation on spin waves with sub-micron wavelengths in Yttrium-Iron-Garnet (YIG) films. Time-resolved scanning transmission X-…
Robust formation of nanoscale magnetic skyrmions in easy-plane thin film multilayers with low damping
Luis Flacke, Valentin Ahrens, Simon Mendisch +14
We experimentally demonstrate the formation of room-temperature skyrmions with radii of about 25\,nm in easy-plane anisotropy multilayers with interfacial Dzyaloshinskii-Moriya int…
Establishing the Magnetoelastic Origin of Spin-Wave Routing through Focused Ion Beam Patterning
Felix Naunheimer, Johannes Greil, Valentin Ahrens +6
Spin waves are promising information carriers for analog and wave-based computing, where functionality relies on compact and precisely engineered scattering landscapes. Focused ion…
Characterizing the Linearity of Magnonic Devices for Radio-Frequency Applications
Robert Erdelyi, Adam Papp Levente Maucha, Philipp Pirro +5
Magnonic devices exhibit strong amplitude-dependent nonlinearities, which are detrimental to signal integrity in radio-frequency (RF) signal processing applications. They also limi…
Design and Realization of Broadband Magnonic Spectrometers With Local Electrical Outputs
Johannes Greil, Maximilian Hofschen, Felix Naunheimer +3
Microscopic radio-frequency (RF) devices based on propagating spin waves (SWs) are promising for compact, energy-efficient RF signal processing, but their implementation is impeded…
Secondary Excitation of Spin-Waves: How Electromagnetic Cross-Talk Impacts on Magnonic Devices
Johannes Greil, Matthias Golibrzuch, Martina Kiechle +4
This work examines the impact of electromagnetic cross-talk in magnonic devices when using inductive spin-wave (SW) transducers. We present detailed electrical SW spectroscopy meas…
Microscaled Tunable Magnonic RF Phase Shifters
Johannes Greil, Antonio Angotti, Felix Kohl +11
Tunable, microscopic, and energy-efficient solutions for radio-frequency (RF) signal manipulation in the GHz regime are a key technology for efficient communication and sensing app…
How Metal/Insulator Interfaces Enable the Enhancement of the Hydrogen Evolution Reaction Kinetics in Two Ways
Thomas L. Maier, Lucas B. T. de Kam, Matthias Golibrzuch +3
Laterally nanostructured surfaces give rise to a new dimension of understanding and improving electrochemical reactions. In this study, we present a peculiar mechanism appearing at…
Experimental Demonstration of a Rowland Spectrometer for Spin Waves
Adam Papp, Martina Kiechle, Simon Mendisch +6
We experimentally demonstrate the operation of a spin-wave Rowland spectrometer. In the proposed device geometry, spin waves are coherently excited on a diffraction grating and for…
Spin-Wave Optics in YIG by Ion-Beam Irradiation
Martina Kiechle, Adam Papp, Simon Mendisch +6
We demonstrate direct focused ion beam (FIB) writing as an enabling technology for realizing spin-wave-optics devices. It is shown that ion-beam irradiation changes the characteris…
Controlling Domain-Wall Nucleation in Ta/CoFeB/MgO Nanomagnets via Local Ga+ Ion Irradiation
Simon Mendisch, Fabrizio Riente, Valentin Ahrens +6
Comprehensive control of the domain wall nucleation process is crucial for spin-based emerging technologies ranging from random-access and storage-class memories over domain-wall l…
Experimental Demonstration of a Spin-Wave Lens Designed with Machine Learning
Martina Kiechle, Levente Maucha, Valentin Ahrens +5
We present the design and experimental realization of a device that acts like a spin-wave lens i.e., it focuses spin waves to a specified location. The structure of the lens does n…
Design rules for low-insertion-loss magnonic transducers
Róbert Erdélyi, György Csaba, Levente Maucha +6
We present a computational framework for the design of magnonic transducers, where waveguide antennas generate and pick up spin-wave signals. Our method relies on the combination o…