Local control of ultrafast dynamics in magnetic nanoparticles

Details Local control of ultrafast dynamics in magnetic nanoparticles Local control of ultrafast dynamics in magnetic nanoparticles

2008-12-02

arxiv.org/abs/0812.0584v1

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

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

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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