
Proceedings Paper
Three-magnon splitting controlled by temperatureFormat | Member Price | Non-Member Price |
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Paper Abstract
A nonlinear magnon interaction has been investigated in an yttrium iron garnet/Pt film. In the bilayer film,
multiple microwave absorption signals due to the excitation of magnetostatic spin waves, including magnoetostatic
surface waves and backward volume magnetostatic spin waves, were observed at room temperature. The
microwave absorption spectrum was found to be changed drastically by decreasing temperature. This drastic
change in the microwave absorption spectrum is attributed to the appearance of the three-magnon splitting
process; the spin-wave dispersion calculated by taking into account the temperature variation of the saturation
magnetization indicates that the change in the microwave absorption spectrum appears when the lowest frequency
of the spin-wave dispersion becomes lower than a half of the microwave excitation frequency. At this
condition, the energy and momentum conservation laws can be fulfilled in the process where a pumped magnon
splits into two magnons. These results demonstrate that the nonlinear magnon interaction can be controlled not
only by excitation frequency but also by temperature.
Paper Details
Date Published: 28 August 2014
PDF: 6 pages
Proc. SPIE 9167, Spintronics VII, 91672H (28 August 2014); doi: 10.1117/12.2059892
Published in SPIE Proceedings Vol. 9167:
Spintronics VII
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)
PDF: 6 pages
Proc. SPIE 9167, Spintronics VII, 91672H (28 August 2014); doi: 10.1117/12.2059892
Show Author Affiliations
Saki Matsuura, Keio Univ. (Japan)
Takaharu Tashiro, Keio Univ. (Japan)
Takaharu Tashiro, Keio Univ. (Japan)
Kazuya Ando, Keio Univ. (Japan)
Japan Science and Technology Agency (Japan)
Japan Science and Technology Agency (Japan)
Published in SPIE Proceedings Vol. 9167:
Spintronics VII
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)
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