Chaotic Dynamics of Spin-Valve Oscillators

Details Chaotic Dynamics of Spin-Valve Oscillators Chaotic Dynamics of Spin-Valve Oscillators

2007-09-25

arxiv.org/abs/0709.4045v1

Phys. Rev. Lett. 99, 134101 (2007)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevLett.99.134101

Recent experimental and theoretical studies on the magnetization dynamics driven by an electric current have uncovered a number of unprecedented rich dynamic phenomena. We predict an intrinsic chaotic dynamics that has not been previously anticipated. We explicitly show that the transition to chaotic dynamics occurs through a series of period doubling bifurcations. In chaotic regime, two dramatically different power spectra, one with a well-defined peak and the other with a broadly distributed noise, are identified and explained.

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