Quenching a magnetized plasma close to the phase transition

The presence of an external magnetic field is shown to prevent the crystallization of a two-dimensional one-component plasma after a sudden quench, provided its field strength surpasses a critical threshold. This unexpected behavior---which seemingly is in violation of the Bohr-van Leeuwen theorem--- is shown to arise from the strong bending of the particle trajectories due to the magnetic field and is explained within a simple one-particle model which elucidates the geometric origin of the crystallization blocking. \\[1ex] T. Ott, H. L\"owen, M. Bonitz, Phys. Rev. Lett., \emph{accepted for publication} (2013)