Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4902025
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Funding
- Strategic AIST Integrated R&D Program, IMPULSE: Initiative for Most Power-Efficient Ultra-Large-Scale Data Exploration
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We investigated the voltage-induced ferromagnetic resonance (FMR) with various DC bias voltage and input RF power in magnetic tunnel junctions. We found that the DC bias monotonically increases the homodyne detection voltage due to the nonlinear FMR originating in an asymmetric magnetization-potential in the free layer. In addition, the linear increase of an output voltage to the input RF power in the voltage-induced FMR is more robust than that in spin-torque FMR. These characteristics enable us to obtain an output voltage more than ten times than that of microwave detectors using spin-transfer torque. (C) 2014 AIP Publishing LLC.
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