Local control of ultrafast dynamics in magnetic nanoparticles
  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. 
A. Sukhov (1 and 2), J. Berakdar (2) ((1) Max-Planck-Institut fuer   Mikrostrukturphysik, Weinberg 2, Halle/Saale, Germany, ...