非线性自动振荡器在产生阈值附近的线型畸变：应用于自旋力矩纳米振荡器
Lineshape distortion in a nonlinear auto-oscillator near generation threshold: Application to spin-torque nano-oscillators
摘要：
本文计算了在热噪声存在下，具有大非线性频移的自动振荡器中的线形。在产生阈值附近，这种线形变得强烈的非洛伦兹，加宽和不对称。一个洛伦兹线形恢复远低于和远高于阈值，这表明线形失真提供了生成阈值的签名。该理论充分描述了所观察到的行为的强非线性自旋扭矩纳米振荡器。
英文摘要：
The lineshape in an auto-oscillator with a large nonlinear frequency shift in the presence of thermal noise is calculated. Near the generation threshold, this lineshape becomes strongly non-Lorentzian, broadened, and asymmetric. A Lorentzian lineshape is recovered far below and far above threshold, which suggests that lineshape distortions provide a signature of the generation threshold. The theory developed adequately describes the observed behavior of a strongly nonlinear spin-torque nano-oscillator.
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