Parametric Generation of Propagating Spin Waves in Ultrathin Yttrium Iron Garnet Waveguides

Autor(en)

Morteza Mohseni, Martin Kewenig, Roman Verba, Qi Wang, Michael Schneider, Björn Heinz, Felix Kohl, Carsten Dubs, Bert Lägel, Alexander A. Serga, Burkard Hillebrands, Andrii V. Chumak, Philipp Pirro

Abstrakt

Herein, experimental demonstration of the parallel parametric generation of spin waves in a microscaled yttrium iron garnet waveguide with nanoscale thickness is presented. Using Brillouin light scattering microscopy, the parametric excitation of the first and second waveguide modes by a stripline microwave pumping source is observed. Micromagnetic simulations reveal the wave vector of the parametrically generated spin waves. Based on analytical calculations, which are in excellent agreement with experiments and simulations, it is proved that the spin-wave radiation losses are the determinative term of the parametric instability threshold in this miniaturized system. The used method enables the direct excitation and amplification of nanometer spin waves dominated by exchange interactions. The presented results pave the way for integrated magnonics based on insulating nanomagnets.

Organisation(en)

Nanomagnetismus und Magnonik

Externe Organisation(en)

Technische Universität Kaiserslautern, National Academy of Sciences of Ukraine (NASU), Johannes Gutenberg-Universität Mainz, Innovent e.V. Technologieentwicklung Jena

Journal

Physica Status Solidi. Rapid Research Letters

Band

14

Anzahl der Seiten

7

ISSN

1862-6254

DOI

https://doi.org/10.1002/pssr.202000011

Publikationsdatum

02-2020

Peer-reviewed

Ja

ÖFOS 2012

210003 Nanoelektronik, 103017 Magnetismus

Schlagwörter

ASJC Scopus Sachgebiete

Condensed Matter Physics, Allgemeine Materialwissenschaften

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e1d32436-d120-43d6-a4b1-b94864d69665