Microwave power generated by a spin-torque oscillator in the presence of noise

Details Microwave power generated by a spin-torque oscillator in the presence of noise Microwave power generated by a spin-torque oscillator in the presence of noise

2007-09-28

arxiv.org/abs/0709.4553v1

Physics

Condensed Matter

Materials Science

3 pages, 2 figures

Scientific paper

10.1063/1.2812546

An expression for the microwave power generated by a spin-torque oscillator in the presence of thermal noise is derived. This expression, when used in a subcritical regime, demonstrates that generated power is determined by the noise level and provides a simple way to experimentally determine the threshold current for microwave generation. The same expression gives a good quantitative description of the experimentally measured dependence of the generated power on the bias current in a moderate super-critical range of bias current variation.

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