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Enhanced spin wave propagation in magnonic rings by bias field modulation

Enhanced spin wave propagation in magnonic rings by bias field modulation
Enhanced spin wave propagation in magnonic rings by bias field modulation
We simulate the spin wave (SW) dynamics in ring structures and obtain the ω k
dispersion relations corresponding to the output waveguide. Different bias field con-figurations affect the transfer of SW power from one arm of the structure to the other arm. To this end, we show that circular or radial bias fields are more suitable for energy transfer across the ring than the conventional horizontal bias field Hx. The SW dispersion shows that modes excited, when the bias field is along the ring radius, are almost 10 dB higher in power when compared to the modal power in the case of Hx. This is also corroborated by the SW energy density in the receiving stub.
2158-3226
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Venkat, G
aa1ec1dc-cca0-4e49-9ec8-5b2f80834d95
Venkateswarlu, R.
0c39e41d-3313-4e8e-9695-414352077da5
Joshi, S
7ae1db04-ecbf-4731-bdf5-75f7bce607a8
Franchin, Matteo
ef8d58ca-63cb-4dc5-b67e-1dc58e82e741
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Venkat, G
aa1ec1dc-cca0-4e49-9ec8-5b2f80834d95
Venkateswarlu, R.
0c39e41d-3313-4e8e-9695-414352077da5
Joshi, S
7ae1db04-ecbf-4731-bdf5-75f7bce607a8
Franchin, Matteo
ef8d58ca-63cb-4dc5-b67e-1dc58e82e741

Fangohr, Hans, Venkat, G, Venkateswarlu, R., Joshi, S and Franchin, Matteo (2018) Enhanced spin wave propagation in magnonic rings by bias field modulation AIP Advances, 8, (5)

Record type: Article

Abstract

We simulate the spin wave (SW) dynamics in ring structures and obtain the ω k
dispersion relations corresponding to the output waveguide. Different bias field con-figurations affect the transfer of SW power from one arm of the structure to the other arm. To this end, we show that circular or radial bias fields are more suitable for energy transfer across the ring than the conventional horizontal bias field Hx. The SW dispersion shows that modes excited, when the bias field is along the ring radius, are almost 10 dB higher in power when compared to the modal power in the case of Hx. This is also corroborated by the SW energy density in the receiving stub.

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More information

Accepted/In Press date: 18 October 2017
e-pub ahead of print date: 8 December 2017
Published date: 1 May 2018

Identifiers

Local EPrints ID: 417118
URI: https://eprints.soton.ac.uk/id/eprint/417118
ISSN: 2158-3226
PURE UUID: e23fa0b6-493e-40b1-9e9d-799b1687cc51

Catalogue record

Date deposited: 19 Jan 2018 17:30
Last modified: 30 Jan 2018 17:31

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Contributors

Author: Hans Fangohr
Author: G Venkat
Author: R. Venkateswarlu
Author: S Joshi
Author: Matteo Franchin

University divisions

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