Strongly coupled magnon–phonon dynamics in a single nanomagnet
| Autor: | Cassidy Berk, Holger Schmidt, Scott Dhuey, M. Jaris, Wei-Gang Yang, Stefano Cabrini |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Photon Phonon Science General Physics and Astronomy 02 engineering and technology Article General Biochemistry Genetics and Molecular Biology Condensed Matter::Materials Science 03 medical and health sciences Magnetic properties and materials Condensed Matter::Superconductivity Polariton lcsh:Science Physics Multidisciplinary Condensed matter physics Condensed Matter::Other business.industry Magnon General Chemistry Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Nanomagnet Magnetic field 030104 developmental biology Semiconductor Ferromagnetism Quasiparticle lcsh:Q Condensed Matter::Strongly Correlated Electrons Magneto-optics 0210 nano-technology business |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019) Nature Communications |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-019-10545-x |
| Popis: | Polaritons are widely investigated quasiparticles with fundamental and technological significance due to their unique properties. They have been studied most extensively in semiconductors when photons interact with various elementary excitations. However, other strongly coupled excitations demonstrate similar dynamics. Specifically, when magnon and phonon modes are coupled, a hybridized magnon–phonon quasiparticle can form. Here, we report on the direct observation of coupled magnon–phonon dynamics within a single thin nickel nanomagnet. We develop an analytic description to model the dynamics in two dimensions, enabling us to isolate the parameters influencing the frequency splitting. Furthermore, we demonstrate tuning of the magnon–phonon interaction into the strong coupling regime via the orientation of the applied magnetic field. Exploring the magnon and phonon coupling may enable high efficiency magnonic applications. Here the authors show the observation, understanding and control of the magnon–phonon interaction by studying the magneto-acoustic resonance modes of a single thin-film Ni nanomagnet. |
| Databáze: | OpenAIRE |
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