Dr
Sebastian Knauer
(Faculty of Physics, University of Vienna)
To realise large-scale integrated magnonic circuits for quantum applications it is required to perform propagating spin-wave spectroscopy in nanostructures at low temperatures. In this work, we demonstrate all-electrical spin-wave propagation in a 100nm-thick yttrium-iron-garnet (YIG) film at temperatures down to 45mK. The extracted spin-wave group velocity and the YIG saturation magnetisation agree well with the theoretical values. We show that the gadolinium-gallium-garnet (GGG) substrate influences the spin-wave propagation characteristics only for the applied magnetic fields beyond 75mT, originating from a GGG magnetisation up to 62kA/m (45mK). Our results demonstrate that the developed fabrication and measurement methodologies enable the realisation of integrated magnonic quantum nanotechnologies at millikelvin temperatures.
Dr
Sebastian Knauer
(Faculty of Physics, University of Vienna)
Kristýna Davídková
(CEITEC BUT, Brno University of Technology)
David Schmoll
(Faculty of Physics, University of Vienna)
Rostyslav Serha
(Faculty of Physics, University of Vienna)
Andrey Voronov
(University of Vienna, Faculty of Physics, Boltzmanngasse 5, Vienna, Austria.)
Qi Wang
(Huazhong University of Science and Technology)
Roman Verba
(Institute of Magnetism, Kyiv)
Prof.
Oleksandr Dobrovolskiy
(University of Vienna)
Morris Lindner
(INNOVENT e.V. Technologieentwicklung)
Timmy Reimann
(INNOVENT e. V. Technologieentwicklung, Prüssingstraße 27 B, Jena, Germany.)
Carsten Dubs
(INNOVENT e. V. Technologieentwicklung, Prüssingstraße 27 B, Jena, Germany.)
Michal Urbánek
(CEITEC BUT, Brno University of Technology, Purkyňova 123, Brno, Czech Republic.)
Andrii Chumak
(University of Vienna, Faculty of Physics, Boltzmanngasse 5, Vienna, Austria.)
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