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Research Group Nanoscaled Magnonic Hybrids

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.

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Internship of Nicolas Fermon
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…
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SELECTED RECENT PUBLICATIONS AND ACCEPTED SUBMISSIONS

Link to FULL PUBLICATION LIST

    2026

  1. Nonlinear frequency shift and bistability of magnon-polarons
    Kevin Künstle, Matthias Wagner, Philipp Knaus, Yannik Kunz, Ephraim Spindler, Katharina Lasinger, Matthias R. Schweizer, Philipp Pirro, John F. Gregg, Mathias Weiler
    arXiv.2605.22157
    • Nonlinear process
    • Surface Acoustic Waves (SAW)
    • YIG
    • Magneto-elastic interaction

  2. Identification and minimization of losses in microscaled spin-wave transducers
    Felix Kohl, Björn Heinz, Ádám Papp, Róbert Erdélyi, Györgi Csaba, Philipp Pirro
    PRA 25, 054064 (2026)
    arXiv.2505.08656
    • Magnonics
    • Microwave
    • Transducer
    • Non-reciprocity
    • YIG

  3. True random number generation through stochastic magnonic bistability
    Mengying Guo, Zhenyu Zhou, Denys Slobodianiuk, Roman Verba, Kristýna Davídková, Xueyu Guo, Xudong Jing, Yueqi Wang, Björn Heinz, Yiheng Rao, Carsten Dubs, Caihua Wan, Xiufeng Han, Andrii V. Chumak, Philipp Pirro, Qi Wang
    arXiv.2604.19356
    • BLS
    • YIG
    • Nonlinear process
    • Nanostructures

  4. Modelling spin-wave interference with electromagnetic leakage in micron-scaled spin-wave transducers
    Felix Kohl, Björn Heinz, Matthias Wagner, Christoph Adelmann, Florin Ciubotaru, Philipp Pirro
    APL 128, 162401 (2026)
    arXiv.2509.24647
    • Magnonics
    • Transducer
    • Microwave

  5. The ideal substrate for yttrium iron garnet films in quantum magnonics
    Rostyslav O. Serha, Carsten Dubs, Christo Guguschev, Bernd Aichner, David Schmoll, Julien Schäfer, Jaganandha Panda, Matthias Weiler, Philipp Pirro, Michal Urbánek & Andrii V. Chumak
    Communications Materials , (2026)
    arXiv.2508.19044
    • YIG
    • Magnonics
    • FMR
    • Low temperatures
    • Spin waves