Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 53, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ab651b
Keywords
spin orbit torque; YIG; ferromagnetic resonance; spin Seebeck effect
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Funding
- Ministry of Science and Technology [MOST 105-2112-M-007-014-MY3, 105-2112-M-001-031-MY3, 108-2112-M-002-021, 108-2622-8-002-016]
- Academia Sinica in Taiwan [AS-TP-107-M04]
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We performed direct microwave power injection into Pt/YIG, a heavy metal/ferrimagnetic insulator bilayer structure. The induced heating effect plays an important role in the interpretation of the ferromagnetic resonance signal. According to our frequency dependent measurements, we found the heat-induced inhomogeneous broadening in addition to the spin Hall magnetoresistance (SMR). From the angular dependent measurement, the thermal signals both in non-resonant and resonant states were observed, consistent with the angular dependence of longitudinal spin Seebeck signal. The heating effect from the injected rf power not only gives rise to the increase of inhomogeneous broadening factor Delta H-0, but also contributes to the increase of damping constant, Delta alpha.
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