“Experimental realization of direct- and inverse-design magnonic devices”
by
Noura Ahmed Elsamanoudy Abdelmeguid Zenbaa
Monday, 27 January 2025, 11:00 a.m.
Seminarroom 1, Zi.3158, Boltzmanngasse 5, 1090 Vienna
Abstract
Magnonic devices leverage spin waves for energy-efficient data processing and computation. This thesis presents the experimental realization of key magnonic components, including diodes, logic gates, and frequency demultiplexers. Particular focus is placed on Yttrium Iron Garnet (YIG) and YIG/CoFeB bilayers, where non-reciprocal spin-wave propagation is demonstrated, enabling diode functionality. Additionally, a universal inverse-design platform is developed, leveraging a reconfigurable array of current loops to realize various functionalities and optimize the performance using feedback-loop algorithms. Experimental validation of this platform highlights its capability to implement versatile RF and logic components. The results emphasize the potential of magnonics as a scalable, energy-efficient alternative for future computing and signal-processing technologies.
Defense committee:
Dirk Grundler, École Polytechnique Fédérale de Lausanne (EPFL), CH (reviewer)
AbdelMadjid Anane, Paris-Saclay University, FR (reviewer)
Andri Chumak (supervisor)
Thomas Pichler (chair)