Enhanced spin wave propagation in magnonic rings by bias field modulation

Venkat, G and Venkateswarlu, D and Joshi, R S and Franchin, M and Fangohr, H and Kumar, P S Anil and Prabhakar, A (2018) Enhanced spin wave propagation in magnonic rings by bias field modulation. In: 62nd Annual Conference on Magnetism and Magnetic Materials (MMM), NOV 06-10, 2017, Pittsburgh, PA.

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Abstract

We simulate the spin wave (SW) dynamics in ring structures and obtain the omega - k dispersion relations corresponding to the output waveguide. Different bias field configurations affect the transfer of SW power from one arm of the structure to the other arm. To this end, we showthat circular or radial bias fields are more suitable for energy transfer across the ring than the conventional horizontal bias field H-x. 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 H-x. This is also corroborated by the SW energy density in the receiving stub. (c) 2017 Author(s).

Item Type:	Conference Proceedings
Publication:	AIP ADVANCES
Publisher:	AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Additional Information:	Copy right for the article belong to AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	11 Apr 2018 19:58
Last Modified:	11 Apr 2018 19:58
URI:	http://eprints.iisc.ac.in/id/eprint/59499

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