Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 54, Issue 36, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ac0ad2
Keywords
parallel parametric pumping; spin wave; magnonics; rectangular block; threshold characteristics
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Funding
- GIST Research Institute (GRI) - GIST
- Korea Institute of Industrial Technology (KITECH)
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT [NRF-2017R1A2B2008538, NRF-2018R1A2B6005183]
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The study examined the characteristics of parametric spin-wave pumping in three rectangular permalloy blocks with different in-plane aspect ratios. Micro-Brillouin light scattering spectroscopy was used to detect the intrinsic properties of the excited spin waves under various excitation conditions. Based on theoretical dispersion relations and BLS intensity, a parametric spin wave with a frequency of fsw=5.6 GHz was identified.
The characteristics of parametric spin-wave pumping are investigated in three rectangular permalloy blocks with in-plane aspect ratios of 12, 6, and 4. Micro-Brillouin light scattering (BLS) spectroscopy is utilized to detect the intrinsic properties of excited spin waves under various excitation conditions of an external magnetic field and microwave power. Based on the theoretical dispersion relation and BLS intensity and its spatial profile, the parametric spin wave with a frequency of fsw=5.6 GHz
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