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Magnonic beam splitter: The building block of parallel magnonic circuitry

Authors :
S.V. Grishin
S. A. Nikitov
C. S. Davies
Yu. P. Sharaevskii
D. V. Romanenko
V. V. Kruglyak
Alexandr V. Sadovnikov
Source :
Applied Physics Letters. 106:192406
Publication Year :
2015
Publisher :
AIP Publishing, 2015.

Abstract

We demonstrate a magnonic beam splitter that works by inter-converting magnetostatic surface and backward-volume spin waves propagating in orthogonal sections of a T-shaped yttrium iron garnet structure. The inter-conversion is enabled by the overlap of the surface and volume spin wave bands. This overlap results from the demagnetising field induced along the transversely magnetised section(-s) of the structure and the quantization of the transverse wave number of the propagating spin waves (which are therefore better described as waveguide modes). In agreement with numerical micromagnetic simulations, our Brillouin light scattering imaging experiments reveal that, depending on the frequency, the incident fundamental waveguide magnonic modes may also be converted into higher order waveguide modes. The magnonic beam splitter demonstrated here is an important step towards the development of parallel logic circuitry of magnonics.

Details

ISSN :
10773118 and 00036951
Volume :
106
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........a216bae3f4ba56425e93871cfb5988c5
Full Text :
https://doi.org/10.1063/1.4921206