Stimulated amplification of propagating spin waves
Spin-wave amplification techniques are key to the realization of magnon-based computing concepts. We introduce a novel mechanism to amplify spin waves in magnonic nanostructures. Using the technique of rapid cooling, we create a non-equilibrium state in excess of high-energy magnons and demonstrate...
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| creator | Breitbach, David Schneider, Michael Heinz, Björn Kohl, Felix Maskill, Jan Scheuer, Laura Serha, Rostyslav O Brächer, Thomas Lägel, Bert Dubs, Carsten Tiberkevich, Vasil S Slavin, Andrei N Serga, Alexander A Burkard Hillebrands Chumak, Andrii V Pirro, Philipp |
| description | Spin-wave amplification techniques are key to the realization of magnon-based computing concepts. We introduce a novel mechanism to amplify spin waves in magnonic nanostructures. Using the technique of rapid cooling, we create a non-equilibrium state in excess of high-energy magnons and demonstrate the stimulated amplification of an externally seeded, propagating spin wave. Using an extended kinetic model, we qualitatively show that the amplification is mediated by an effective energy flux of high energy magnons into the low energy propagating mode, driven by a non-equilibrium magnon distribution. |
| doi_str_mv | 10.48550/arxiv.2208.11455 |
| format | Article |
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| subjects | Magnons Physics - Applied Physics Physics - Materials Science Wave amplification Wave packets Wave propagation |
| title | Stimulated amplification of propagating spin waves |
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