@article{GOLEBIEWSKI2025120499,
title = {Magnetic field controlled surface localization of ferromagnetic resonance modes in 3D nanostructures},
author = {Mateusz Gołębiewski and Krzysztof Szulc and Maciej Krawczyk},
url = {https://www.sciencedirect.com/science/article/pii/S1359645424008486},
doi = {https://doi.org/10.1016/j.actamat.2024.120499},
issn = {1359-6454},
year = {2025},
date = {2025-01-15},
journal = {Acta Materialia},
volume = {283},
pages = {120499},
abstract = {By extending the current understanding and use of magnonics beyond conventional planar systems, we demonstrate the surface localization of ferromagnetic resonance (FMR) modes through the design of complex three-dimensional nanostructures. Using micromagnetic simulations, we systematically investigate woodpile-like scaffolds and gyroids — periodic chiral entities characterized by their triple junctions. The study highlights the critical role of demagnetizing fields and exchange energy in determining the FMR responses of 3D nanosystems, especially the strongly asymmetric distribution of the spin-wave mode over the system’s height. Importantly, the top–bottom dynamic switching of the surface mode localization across the structures in response to changes in magnetic field orientation provides a new method for controlling magnetization dynamics. The results demonstrate the critical role of the geometric features in dictating the dynamic magnetic behavior of three-dimensional nanostructures, paving the way for both experimental exploration and practical advances in 3D magnonics.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{10.1063/5.0195099,
title = {Spin-wave self-imaging: Experimental and numerical demonstration of caustic and Talbot-like diffraction patterns},
author = {Uladzislau Makartsou and Mateusz Gołębiewski and Urszula Guzowska and Alexander Stognij and Ryszard Gieniusz and Maciej Krawczyk},
url = {https://doi.org/10.1063/5.0195099},
doi = {10.1063/5.0195099},
issn = {0003-6951},
year = {2024},
date = {2024-05-09},
journal = {Applied Physics Letters},
volume = {124},
number = {19},
pages = {192406},
abstract = {Extending the scope of the self-imaging phenomenon, traditionally associated with linear optics, to the domain of magnonics, this study presents the experimental demonstration and numerical analysis of spin-wave (SW) self-imaging in an in-plane magnetized yttrium iron garnet film. We explore this phenomenon using a setup in which a plane SW passes through a diffraction grating, and the resulting interference pattern is detected using Brillouin light scattering. We have varied the frequencies of the source dynamic magnetic field to discern the influence of the anisotropic dispersion relation and the caustic effect on the analyzed phenomenon. We found that at low frequencies and diffraction fields, the caustics determine the interference pattern. However, at large distances from the grating, when the waves of high diffraction order and number of slits contribute to the interference pattern, the self-imaging phenomenon and Talbot-like patterns are formed. This methodological approach not only sheds light on the behavior of SW interference under different conditions but also enhances our understanding of the SW self-imaging process in both isotropic and anisotropic media.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{Gołębiewski2024,
title = {Collective Spin-Wave Dynamics in Gyroid Ferromagnetic Nanostructures},
author = {Mateusz Gołębiewski and Riccardo Hertel and Massimiliano dÁquino and Vitaliy Vasyuchka and Mathias Weiler and Philipp Pirro and Maciej Krawczyk and Shunsuke Fukami and Hideo Ohno and Justin Llandro},
url = {https://doi.org/10.1021/acsami.4c02366},
doi = {10.1021/acsami.4c02366},
issn = {1944-8244},
year = {2024},
date = {2024-04-22},
journal = {ACS Applied Materials & Interfaces},
publisher = {American Chemical Society},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{https://doi.org/10.1002/qute.202400015,
title = {Exciting High-Frequency Short-Wavelength Spin Waves using High Harmonics of a Magnonic Cavity Mode},
author = {Nikhil Kumar and Paweł Gruszecki and Mateusz Gołębiewski and Jarosław W. Kłos and Maciej Krawczyk},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/qute.202400015},
doi = {https://doi.org/10.1002/qute.202400015},
year = {2024},
date = {2024-03-29},
journal = {Advanced Quantum Technologies},
volume = {n/a},
number = {n/a},
pages = {2400015},
abstract = {Abstract Spin waves (SWs) are promising objects for signal processing and future quantum technologies due to their high microwave frequencies with corresponding nanoscale wavelengths. However, the nano-wavelength SWs generated so far are limited to low frequencies. In the paper, using micromagnetic simulations, it is shown that a microwave-pumped SW mode confined to the cavity of a thin film magnonic crystal (MC) can be used to generate waves at tens of GHz and wavelengths well below 50 nm. These multi-frequency harmonics of the fundamental cavity mode are generated when the amplitude of the pumping microwave field exceeds a threshold, and their intensities then scale linearly with the field intensity. The frequency of the cavity mode is equal to the ferromagnetic resonance frequency of the planar ferromagnetic film, which overlaps with the magnonic bandgap, providing an efficient mechanism for confinement and magnetic field tunability. The effect reaches saturation when the microstrip feed line covers the entire cavity, making the system feasible for realization.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{PhysRevApplied.19.064045,
title = {Spin-Wave Spectral Analysis in Crescent-Shaped Ferromagnetic Nanorods},
author = {Mateusz Gołębiewski and Hanna Reshetniak and Uladzislau Makartsou and Maciej Krawczyk and Arjen van den Berg and Sam Ladak and Anjan Barman},
url = {https://link.aps.org/doi/10.1103/PhysRevApplied.19.064045},
doi = {10.1103/PhysRevApplied.19.064045},
year = {2023},
date = {2023-06-14},
journal = {Phys. Rev. Appl.},
volume = {19},
pages = {064045},
publisher = {American Physical Society},
abstract = {The research on the properties of spin waves (SWs) in three-dimensional nanosystems is an innovative idea in the field of magnonics. Mastering and understanding the nature of magnetization dynamics and binding of SWs at surfaces, edges, and in-volume parts of three-dimensional magnetic systems enables the discovery of alternative phenomena and suggests other possibilities for their use in magnonic and spintronic devices. In this work, we use numerical methods to study the effect of geometry and external magnetic field manipulations on the localization and dynamics of SWs in crescent-shaped (CS) waveguides. It is shown that changing the magnetic field direction in these waveguides breaks the symmetry and affects the localization of eigenmodes with respect to the static demagnetizing field. This, in turn, has a direct effect on their frequency. Furthermore, CS structures are found to be characterized by significant saturation at certain field orientations, resulting in a cylindrical magnetization distribution. Thus, we present chirality-based nonreciprocal dispersion relations for high-frequency SWs, which can be controlled by the field direction (shape symmetry) and its amplitude (saturation).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{9668947,
title = {Self-Imaging of Spin Waves in Thin, Multimode Ferromagnetic Waveguides},
author = {Mateusz Gołȩbiewski and Paweł Gruszecki and Maciej Krawczyk},
doi = {10.1109/TMAG.2022.3140280},
issn = {1941-0069},
year = {2022},
date = {2022-08-01},
journal = {IEEE Transactions on Magnetics},
volume = {58},
number = {8},
pages = {1-5},
abstract = {Self-imaging of waves is an intriguing and spectacular effect. The phenomenon was first observed for light in 1836 by Henry Fox Talbot and to this day is the subject of research in many areas of physics, for various types of waves and in terms of different applications. This article is a Talbot-effect study for spin waves (SWs) in systems composed of a thin, ferromagnetic waveguide with a series of single-mode sources of SWs flowing into it. The proposed systems are studied with the use of micromagnetic simulations, and the SW self-imaging dependencies on many parameters are examined. We formulated conditions required for the formation of self-images and suitable for experimental realization. The results of the research form the basis for the further development of self-imaging-based magnonic devices.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{https://doi.org/10.1002/aelm.202200373,
title = {Self-Imaging Based Programmable Spin-Wave Lookup Tables},
author = {Mateusz Gołębiewski and Paweł Gruszecki and Maciej Krawczyk},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/aelm.202200373},
doi = {https://doi.org/10.1002/aelm.202200373},
year = {2022},
date = {2022-07-21},
journal = {Advanced Electronic Materials},
volume = {n/a},
number = {n/a},
pages = {2200373},
abstract = {Abstract Inclusion of spin waves into the computing paradigm, where complementary metal-oxide-semiconductor devices are still at the fore, is now a challenge for scientists around the world. In this work, a wave phenomenon that has not yet been used in magnonics-self-imaging, also known as the Talbot effect, to design and simulate the operation of interference systems that perform logic functions on spin waves in thin ferromagnetic multimode waveguides is utilized. Lookup tables operating in this way are characterized by high programmability and scalability; thanks to which they are promising for their implementation in field-programmable gate arrays circuits, where multiple logic realizations can be obtained.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}