Björn Heinz, Qi Wang, Michael Schneider, Elisabeth Weiß, Akira Lentfert, Bert Lägel, Thomas Brächer, Carsten Dubs, Oleksandr V. Dobrovolskiy, Philipp Pirro, Andrii V. Chumak
- Magnonics attracts increasing attention in the view of low-energy computation technologies based on spin waves. Recently, spin-wave propagation in longitudinally magnetized nano-scaled spin-wave conduits was demonstrated, proving the fundamental feasibility of magnonics at the sub-100 nm scale. Transversely magnetized nano-conduits, which are of great interest in this regard as they offer a large group velocity and a potentially chirality-based protected transport of energy, have not yet been investigated due to their complex internal magnetic field distribution. Here, we present a study of propagating spin waves in a transversely magnetized nanoscopic yttrium iron garnet conduit of 50 nm width. Space and time-resolved microfocused Brillouin-light-scattering spectroscopy is employed to measure the spin-wave group velocity and decay length. A long-range spin-wave propagation is observed with a decay length of up to (8.0 ± 1.5) μm and a large spin-wave lifetime of up to (44.7 ± 9.1) ns. The results are supported with micromagnetic simulations, revealing a broad single-mode frequency range and the absence of a mode localized to the edges. Furthermore, a frequency nonreciprocity for counter-propagating spin waves is observed in the simulations and the experiment, caused by the trapezoidal cross section of the structure. The revealed long-distance spin-wave propagation on the nano-scale is particularly interesting for an application in spin-wave devices, allowing for long-distance transport of information in magnonic circuits and low-energy device architectures.
MetadatenVerfasser*innenangaben: | Björn HeinzORCiD, Qi WangORCiD, Michael Schneider, Elisabeth Weiß, Akira Lentfert, Bert LägelORCiD, Thomas Brächer, Carsten DubsORCiD, Oleksandr V. DobrovolskiyORCiD, Philipp PirroORCiD, Andrii V. ChumakORCiD |
---|
URN: | urn:nbn:de:hbz:386-kluedo-81241 |
---|
DOI: | https://doi.org/10.1063/5.0045570 |
---|
ISSN: | 1077-3118 |
---|
Titel des übergeordneten Werkes (Englisch): | Applied Physics Letters |
---|
Verlag: | AIP |
---|
Dokumentart: | Wissenschaftlicher Artikel |
---|
Sprache der Veröffentlichung: | Englisch |
---|
Datum der Veröffentlichung (online): | 25.04.2024 |
---|
Jahr der Erstveröffentlichung: | 2021 |
---|
Veröffentlichende Institution: | Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau |
---|
Datum der Publikation (Server): | 25.04.2024 |
---|
Ausgabe / Heft: | 118/13 |
---|
Seitenzahl: | 7 |
---|
Quelle: | https://pubs.aip.org/aip/apl/article/118/13/132406/1061434/Long-range-spin-wave-propagation-in-transversely |
---|
Fachbereiche / Organisatorische Einheiten: | Kaiserslautern - Fachbereich Physik |
---|
DDC-Sachgruppen: | 5 Naturwissenschaften und Mathematik / 530 Physik |
---|
Sammlungen: | Open-Access-Publikationsfonds |
---|
Lizenz (Deutsch): | Zweitveröffentlichung |
---|