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Local Control of Ultrafast Dynamics of Magnetic Nanoparticles

Sukhov A., Berakdar J.

Phys. Rev. Lett. 102, pp 057204 (2009)

Using the local control theory we derive analytical expressions for magnetic field pulses that steer the magnetization of a monodomain magnetic nanoparticle to a predefined state. Finite-temperature full numerical simulations confirm the analytical results and show that a magnetization switching or freezing is achievable within few precessional periods and that the scheme is exploitable for fast thermal switching.

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