Generation of propagating backward volume spin waves by phase-sensitive mode conversion in two-dimensional microstructures

We present the generation of propagating backward volume (BV) spin waves in a T shaped Ni81Fe19 microstructure. These waves are created from counterpropagating Damon Eshbach spin waves, which are excited using microstrip antennas. By employing Brillouin light scattering microscopy, we show how the p...

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Bibliographic Details
Published in:	Applied physics letters Vol. 102; no. 13
Main Authors:	Brächer, T., Pirro, P., Westermann, J., Sebastian, T., Lägel, B., Van de Wiele, B., Vansteenkiste, A., Hillebrands, B.
Format:	Journal Article
Language:	English
Published:	United States 01-04-2013
Subjects:	ANTENNAS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTAL STRUCTURE IRON ALLOYS LIGHT SCATTERING MICROSTRUCTURE MODE CONVERSION NICKEL ALLOYS SPECTRA SPIN WAVES TWO-DIMENSIONAL CALCULATIONS WAVE PROPAGATION
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Summary:	We present the generation of propagating backward volume (BV) spin waves in a T shaped Ni81Fe19 microstructure. These waves are created from counterpropagating Damon Eshbach spin waves, which are excited using microstrip antennas. By employing Brillouin light scattering microscopy, we show how the phase relation between the counterpropagating waves determines the mode generated in the center of the structure, and prove its propagation inside the longitudinally magnetized part of the T shaped microstructure. This gives access to the effective generation of backward volume spin waves with full control over the generated transverse mode.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4800005