Propagating spin-wave spectroscopy in nanometer-thick YIG films at millikelvin temperatures
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866909899829542912 |
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| author | Knauer, Sebastian Davídková, Kristýna Schmoll, David Serha, Rostyslav O. Voronov, Andrey Wang, Qi Verba, Roman Dobrovolskiy, Oleksandr V. Lindner, Morris Reimann, Timmy Dubs, Carsten Urbánek, Michal Chumak, Andrii V. |
| author_facet | Knauer, Sebastian Davídková, Kristýna Schmoll, David Serha, Rostyslav O. Voronov, Andrey Wang, Qi Verba, Roman Dobrovolskiy, Oleksandr V. Lindner, Morris Reimann, Timmy Dubs, Carsten Urbánek, Michal Chumak, Andrii V. |
| contents | Performing propagating spin-wave spectroscopy of thin films at millikelvin temperatures is the next step towards the realisation of large-scale integrated magnonic circuits for quantum applications. Here we demonstrate spin-wave propagation in a $100\,\mathrm{nm}$-thick yttrium-iron-garnet film at the temperatures down to $45 \,\mathrm{mK}$, using stripline nanoantennas deposited on YIG surface for the electrical excitation and detection. The clear transmission characteristics over the distance of $10\,μ\mathrm{m}$ are measured and the subtracted spin-wave group velocity and the YIG saturation magnetisation agree well with the theoretical values. We show that the gadolinium-gallium-garnet substrate influences the spin-wave propagation characteristics only for the applied magnetic fields beyond $75\,\mathrm{mT}$, originating from a GGG magnetisation up to $47 \,\mathrm{kA/m}$ at $45 \,\mathrm{mK}$. Our results show that the developed fabrication and measurement methodologies enable the realisation of integrated magnonic quantum nanotechnologies at millikelvin temperatures. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2212_02257 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Propagating spin-wave spectroscopy in nanometer-thick YIG films at millikelvin temperatures Knauer, Sebastian Davídková, Kristýna Schmoll, David Serha, Rostyslav O. Voronov, Andrey Wang, Qi Verba, Roman Dobrovolskiy, Oleksandr V. Lindner, Morris Reimann, Timmy Dubs, Carsten Urbánek, Michal Chumak, Andrii V. Applied Physics Mesoscale and Nanoscale Physics Quantum Physics Performing propagating spin-wave spectroscopy of thin films at millikelvin temperatures is the next step towards the realisation of large-scale integrated magnonic circuits for quantum applications. Here we demonstrate spin-wave propagation in a $100\,\mathrm{nm}$-thick yttrium-iron-garnet film at the temperatures down to $45 \,\mathrm{mK}$, using stripline nanoantennas deposited on YIG surface for the electrical excitation and detection. The clear transmission characteristics over the distance of $10\,μ\mathrm{m}$ are measured and the subtracted spin-wave group velocity and the YIG saturation magnetisation agree well with the theoretical values. We show that the gadolinium-gallium-garnet substrate influences the spin-wave propagation characteristics only for the applied magnetic fields beyond $75\,\mathrm{mT}$, originating from a GGG magnetisation up to $47 \,\mathrm{kA/m}$ at $45 \,\mathrm{mK}$. Our results show that the developed fabrication and measurement methodologies enable the realisation of integrated magnonic quantum nanotechnologies at millikelvin temperatures. |
| title | Propagating spin-wave spectroscopy in nanometer-thick YIG films at millikelvin temperatures |
| topic | Applied Physics Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2212.02257 |