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AG Magnonik

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. Local inhomogeneity-mediated phase-dependent magnon amplification in YIG nanostructures
    Akira Lentfert, Ephraim Spindler, Björn Heinz, Mathias Weiler, Philipp Pirro
    View Publication , (2026)
    arXiv.2606.02139
    • BLS
    • Magnonics
    • Micromagnetism
    • Nanostructures
    • Parametric Pumping
    • Spin waves
    • Nonlinear process

  2. Magneto-optical signal from Co2Mn-based Heusler thin films in MOKE and BLS
    Anna Maria Friedel, Nicolas Fermon, Tobias Böttcher, Sébastien Petit-Watelot, Stéphane Andrieu, Philipp Pirro
    arXiv.2608.07052
    • BLS
    • MOKE
    • Magnonics
    • Spin waves
    • Anisotropy
    • Pre-prints

  3. Selective Tuning of Perpendicular Magnetic Anisotropy and Dzyaloshinskii–Moriya Interaction in Heterostructures Compatible with Magnetic Tunnel Junctions
    Bob Vermeulen, Seongbin Seo, Domenico Giuliano, Jyotirmoy Chatterjee, Giacomo Talmelli, Robert Carpenter, Yann Canvel, Yanan Li, Björn Heinz, Philipp Pirro, Bart Sorée, Kristiaan Temst, Van Dai Nguyen, Gouri Sankar Kar, Siddharth Rao.
    Advanced Electronic Materials , e70536 (2026)
    • DMI
    • Anisotropy
    • Spintronics
    • BLS
    • Nanofabrication

  4. Near-zero effective magnetization enabling ultra-low threshold currents in spin Hall micro-oscillators
    A. Koujok, H. Kurebayashi, K. Yamamoto, B. Heinz, V. K. Kushwaha, X. Hou, A. Hamadeh, T. Seki, P. Pirro
    arXiv.2607.26299
    • Nano-oscillators
    • Magnonics
    • BLS
    • Microwave
    • Nanostructures
    • Nonlinear process

  5. Resonant excitations via low frequency pumping in driven magnon systems
    Jan Mathis Giesen, Alexandre Abbass Hamadeh, Imke Schneider, Philipp Pirro, Sebastian Eggert
    arXiv.2607.18073
    • Magnonics
    • Spin waves
    • Parametric Pumping
    • Magnon Instability
    • Nonlinear process
    • YIG
    • Simulation
    • Micromagnetism