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  Imaging Spin-Wave Damping Underneath Metals Using Electron Spins in Diamond

Bertelli, I., Simon, B. G., Yu, T., Aarts, J., Bauer, G. E. W., Blanter, Y. M., et al. (2021). Imaging Spin-Wave Damping Underneath Metals Using Electron Spins in Diamond. Advanced Quantum Technologies, 4(12): 2100094. doi:10.1002/qute.202100094.

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Adv Quantum Tech - 2021 - Bertelli - Imaging Spin%u2010Wave Damping Underneath Metals Using Electron Spins in Diamond.pdf (Verlagsversion), 4MB
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This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
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© The Authors. Advanced Quantum Technologies published by Wiley-VCH GmbH.

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https://arxiv.org/abs/2106.02508 (Preprint)
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https://dx.doi.org/10.1002/qute.202100094 (Verlagsversion)
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 Urheber:
Bertelli, I.1, 2, Autor
Simon, B. G.1, Autor
Yu, T.3, 4, Autor           
Aarts, J.2, Autor
Bauer, G. E. W.1, 5, Autor
Blanter, Y. M.1, 5, Autor
van der Sar, T.1, Autor
Affiliations:
1Department of Quantum Nanoscience, Kavli Institute of Nanoscience, Delft University of Technology, ou_persistent22              
2Huygens - Kamerlingh Onnes Laboratorium, Leiden University, ou_persistent22              
3Theoretical Description of Pump-Probe Spectroscopies in Solids, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_3012828              
4School of Physics, Huazhong University of Science and Technology, ou_persistent22              
5WPI-AIMR & Institute for Materials Research & CSRN, Tohoku University, ou_persistent22              

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Schlagwörter: diamond, magnetic imaging, magnetic insulators, NV centers, quantum sensing, spin waves, spintronics
 Zusammenfassung: Spin waves in magnetic insulators are low-damping signal carriers that can enable a new generation of spintronic devices. The excitation, control, and detection of spin waves by metal electrodes is crucial for interfacing these devices to electrical circuits. As such, it is important to understand metal-induced damping of spin-wave transport, but characterizing this process requires access to the underlying magnetic films. Here it is shown that electronic sensor spins in diamond enable imaging of spin waves that propagate underneath metals in magnetic insulators. This capability is then used to reveal a 100-fold metal-induced increase in spin-wave damping. The damping enhancement is attributed to spin-wave-induced electrical currents as well as, above a certain frequency, three-magnon scattering processes. This interpretation is supported by deriving expressions for the current-induced damping and the three-magnon threshold from the Landau–Lifshitz–Gilbert equation that agree well with the observations. The detection of buried scattering centers further highlights the technique's power for assessing spintronic device quality. These results open new avenues for studying metal – spin-wave interactions and provide access to interfacial processes such as spin-wave injection via the spin-Hall effect.

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Sprache(n): eng - English
 Datum: 2021-09-022021-07-142021-10-29
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 2106.02508
DOI: 10.1002/qute.202100094
 Art des Abschluß: -

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Projektname : This work was supported by the Dutch Research Council (NWO) as part of the Frontiers of Nanoscience (NanoFront) program and through the NWO Projectruimte grant 680.91.115 and by the JSPS KAKENHI Grant 19H006450.
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Titel: Advanced Quantum Technologies
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 4 (12) Artikelnummer: 2100094 Start- / Endseite: - Identifikator: CoNE: https://pure.mpg.de/cone/journals/resource/https://onlinelibrary.wiley.com/journal/25119044