Nonlinear losses in magnon transport due to four-magnon scattering

Hula T, Schultheiss K, Buzdakov A, Koerber L, Bejarano M, Flacke L, Liensberger L, Weiler M, Shaw JM, Nembach HT, Fassbender J, Schultheiss H (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 117

Article Number: 0015269

Journal Issue: 4

DOI: 10.1063/5.0015269

Abstract

We report on the impact of nonlinear four-magnon scattering on magnon transport in microstructured Co25Fe75 waveguides with low magnetic damping. We determine the magnon propagation length with microfocused Brillouin light scattering over a broad range of excitation powers and detect a decrease in the attenuation length at high powers. This is consistent with the onset of nonlinear four-magnon scattering. Hence, it is critical to remain in the linear regime when deriving damping parameters from the magnon propagation length. Otherwise, the intrinsic nonlinearity of magnetization dynamics may lead to a misinterpretation of magnon propagation lengths and, thus, to incorrect values of the magnetic damping of the system.

Involved external institutions

Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE) Bayerische Akademie der Wissenschaften DE Germany (DE) National Institute of Standards and Technology (NIST) US United States (USA) (US)

How to cite

APA:

Hula, T., Schultheiss, K., Buzdakov, A., Koerber, L., Bejarano, M., Flacke, L.,... Schultheiss, H. (2020). Nonlinear losses in magnon transport due to four-magnon scattering. Applied Physics Letters, 117(4). https://doi.org/10.1063/5.0015269

MLA:

Hula, Tobias, et al. "Nonlinear losses in magnon transport due to four-magnon scattering." Applied Physics Letters 117.4 (2020).

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