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| Authors |
Yan Zhou Vasil Tiberkevich Giancarlo Consolo Ezio Iacocca Bruno Azzerboni Andrei Slavin Johan Åkerman |
|---|---|
| Published in | Physical Review B |
| Volume | 82 |
| Issue | 1 |
| Pages | 012408 (4 pages) |
| ISSN | 1098-0121 |
| Publication year | 2010 |
| Published at |
Department of Physics (GU) |
| Pages | 012408 (4 pages) |
| Language | en |
| Links |
prb.aps.org/abstract/PRB/v82/i1/e01... |
| Keywords | spinntronik, magnetism |
| Subject categories | Magnetism, Physical Sciences |
We demonstrate that the forced transient dynamics of a nonlinear (nonisochronous) auto-oscillator is qualitatively different from the dynamics of a quasilinear oscillator described by the classical Adler’s model. If the normalized amplitude μ of the driving force exceeds a certain critical value μcr, the transition to the synchronized regime becomes oscillatory with a frequency proportional to ∝√μ−μcr and a synchronization time that is almost independent of μ. The discovered effect is illustrated on the example of a strongly nonlinear spin torque nano-oscillator (STNO) where the finite transient synchronization time can limit the possible range of STNO modulation frequencies.
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