CoSpiN “Coherent Networks for Neuromorphic Computing” funded by the ERC
Nanoscaled Magnonic Networks
Our view of the building blocks for magnetic components and their assembly on the chip.
Our way to detect magnons: Brillouin light scattering microscopy
Roadmap on spin-wave computing
Check out this comprehensive description of recent developments and trends in magnonic computing.
Spin waves, the elementary low energy excitations of an ordered spin system, and their bosonic quanta, magnons, carry energy and angular momentum in the form of spin. The field of magnonics aims to create devices for sensing, data processing and logic which are based on spin waves and their outstanding properties like intrinsic nonlinearity and nanometer wavelengths at GHz frequencies.
Our scientific aim is to explore and combine emerging physical phenomena which can be used to realise novel magnonic hybrid systems with novel and superior characteristics. We have a particular focus on:
- Nonlinear spin-wave phenomena in micro- and nanostructures
- Nanoscaled magnonic devices for unconventional data processing
- Novel materials for magnonics including low-damping Heuler compounds
- Hybrid systems combining magnonics with spintronic and phononic systems
- Amplification and control of coherent spin-waves in micro-and nanostructures using parametric processes
- Nonreciprocal magnonic systems based on dipole-dipole and DMI interactions
To achieve our goals, we investigate magnonics systems experimentally by Brillouin light scattering spectroscopy and inductive techniques. To study and optimize magnonic systems before fabrication, we employ massively parallelized micromagnetic simulations. These simulations are run and analysed by our home-made AITHERICON software platform with the aim to use artificial intelligence, neural networks and inverse design methods to create magnonic systems with designed and superior properties for wave-based transport and data processing.
News
We are very pleased to welcome Dr. Mujin You as a new Postdoctoral Researcher in our group. Mujin received his Ph.D. from KAIST (Korea Advanced Institute of Science and Technology) with a thesis on “Study of magnonic nonlinearity in the synthetic antiferromagnet”. At RPTU, his research direction will focus on nonlinear magnonics. We wish Mujin a great start in Kaiserslautern and look forward to exciting research together!
First „Cotutelle” of the department of Physics of RPTU: We warmly congratulate Anna Maria Friedel on the successful defense of her PhD thesis. This milestone is particularly special as it marks the first Cotutelle doctorate of the Department of Physics at RPTU, realized in collaboration with Université de Lorraine Institut Jean Lamour The entire group celebrates Anna’s achievement and wishes her all the best for her future career.
On 3rd Sept2025, 12 people from both Nanoscaled Hybrid magnonics and Apllied Spin Phenomena groups from Kaiserslautern University visited the Institut Jean Lamour (IJL) in Nancy. The visitors were welcomed with an introduction to the institute’s cutting-edge research in materials science, nanotechnology, and spintronics, followed by guided tours of several technical platforms and laboratories. During the visit, the guests were introduced to IJL’s research in materials science, nanotechnology, and spintronics, and toured several laboratories and technical platforms. A special highlight was the institute’s 70-meter ultra-high vacuum tube, a unique facility for advanced material studies. The visit both consolidated the present collaboration and inspired some opportunities for joint…
The Magnonics Conference 2025 was held from 28 July – 1 August in Mallorca, bringing together around 150 researchers from across the world to discuss the latest advancements in magnonics (magnonics25.sciencesconf.org). Four members of Research Group Nanoscaled Magnonic Hybrids actively participated, contributing one contributed talk and three poster presentations. On the first day of the conference, Abbas Koujok delivered a talk titled “Reduced Auto-Oscillation Threshold in Micro-sized Spin Hall Oscillators.” During the poster sessions, Mohammad Javad Kamali Ashtiani presented “Excitation of Spin Waves via Surface Acoustic Waves in Complex Magnetic Domain Structures” on Tuesday. Hanadi Mortada showcased “Nonreciprocal Spin Waves in Adaptive Bi:YIG Nanomagnonic Devices Utili…
On October 8th 2024, we had the pleasure to host the “Micromagnetism for Magnonics Workshop“ organised by Philipp Pirro at the LASE in Kaiserslautern. Researchers from Spin+X discussed with our guests from Austria, France, Poland and the Netherlands the latest developments in the field of magnonic phenomena and their description using micromagnetism, but also emerging phenomena beyond the micromagnetic approach.
Our PhD students Anna Maria Friedel and David Breitbach both received a best poster prize at the Magnonics 2023 Conference in Le Touquet-Paris-Plage, France. David Breitbach presented a poster on “Bistability based Magnon Computing”, which is part of his PhD work under supervision of Jun. Prof. Philipp Pirro. Anna Maria Friedel presented a poster on “Magnetisation dynamics of epitaxial Co2MnSi / X / Co2MnAl Heusler bilayers with metallic and non-metallic interlayers”. This work is part of her PhD equally supervised by Jun. Prof. Philipp Pirro in an international joint PhD program with the Institut Jean Lamour in Nancy. Both students received a travel grant by the RPTU Nachwuchsring for their trip to the conference in France.
At the 6th Italian School on Magnetism in Milano (June 6th- 9th 2023), which is entitled “Information processing in spin-based systems”, Philipp Pirro will introduce the concepts of spin-wave based computing. Further info on the school: www.aimagn.org/school2023/
On May 16th and 17th 2023, we had the pleasure to have Davi Rodrigues from the Politecnico di Bari in Italy as our guest in Kaiserslautern. Davi gave an inspiring presentation about “Nonlinear Magnetization Dynamics for Analog Computing”. Thank you Davi for your visit! We are looking forward to continue our collaboration on complex magnetisation dynamics for unconventional computing.
We are very happy that our group could contribute to this article for the general public which explains the idea of spin-wave based computing. It appeared in the „Bild der Wissenschaft“ (in German) in April 2022 and is linked below. Zum Artikel
From Mach to July 2023, we had the pleasure to host Nicolas Fermon from Ecole National Supérieure (ENS) Paris-Saclay for his internship. As part of Anna Friedel’s work on highly polarized Heusler alloys, Nicolas studied their magneto-optical properties. He was able to show that the semimetal Co2MnSi, grown at the Institut Jean Lamour in Nancy, exhibits a large quadratic magneto-optic Kerr effect (Q-MOKE), which is an important step towards understanding the magnon dynamics in Co2MnSi when studied with Brillouin light scattering spectroscopy.
SELECTED RECENT PUBLICATIONS AND ACCEPTED SUBMISSIONS
Link to FULL PUBLICATION LIST
- Deeply Nonlinear Magnonic Directional CouplerXu Ge, Roman Verba, Philipp Pirro, Andrii V Chumak, Qi WangNano Letters , (2025)2505.13829
- YSGAG: The Ideal Substrate for YIG in Quantum MagnonicsRostyslav O. Serha, Carsten Dubs, Christo Guguschev, Bernd Aichner, David Schmoll, Jaganandha Panda, Matthias Weiler, Philipp Pirro, Michal Urbánek, Andrii V. Chumak2508.19044
- Efficient spin-wave excitation by surface acoustic waves in ultra-low damping YIG/ZnO-heterostructuresYannik Kunz, Julian Schüler, Finlay Ryburn, Kevin Künstle, Michael Schneider, Katharina Lasinger, Yangzhan Zhang, Philipp Pirro, John Gregg, Mathias WeilerPHYSICAL REVIEW APPLIED 24, 014043 (2025)arXiv.2503.11203
- Standalone Integrated Magnonic DevicesM. Cocconcelli, F. Maspero, A. Micelli, A. Toniato, A. Del Giacco, N. Pellizzi, A. E. Plaza, A. Cattoni, M. Madami, R. Silvani, A. A. Hamadeh, C. Adelmann, P. Pirro, S. Tacchi, F. Ciubotaru, R. BertaccoAdvanced Materials , 2503493 (2025)arXiv.2502.03186
- Magnon-polaron control in a surface magnetoacoustic wave resonatorKevin Künstle, Yannik Kunz, Tarek Moussa, Katharina Lasinger, Kei Yamamoto, Philipp Pirro, John F Gregg, Akashdeep Kamra, Mathias WeilerarXiv.2506.09717