期刊
PHYSICAL REVIEW B
卷 81, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.140408
关键词
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资金
- Swedish Foundation for Strategic Research (SSF)
- Swedish Research Council (VR)
- Goran Gustafsson Foundation
- Knut and Alice Wallenberg Foundation
- CNISM
We study the current-controlled modulation of a nanocontact spin-torque oscillator. Three principally different cases of frequency nonlinearity (d(2)f/dI(dc)(2) being zero, positive, and negative) are investigated. Standard nonlinear frequency-modulation theory is able to accurately describe the frequency shifts during modulation. However, the power of the modulated sidebands only agrees with calculations based on a recent theory of combined nonlinear frequency and amplitude modulation.
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