Synchronization of particle motion induced by mode coupling in a two-dimensional plasma crystal.
作者信息
Couëdel L, Zhdanov S, Nosenko V, Ivlev A V, Thomas H M, Morfill G E
机构信息
CNRS, Aix-Marseille Université, Laboratoire de Physique des Interactions Ioniques et Moléculaires, 13397 Marseille cedex 20, France.
Max Planck Institute for Extraterrestrial Physics, D-85741 Garching, Germany.
出版信息
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 May;89(5):053108. doi: 10.1103/PhysRevE.89.053108. Epub 2014 May 30.
The kinematics of dust particles during the early stage of mode-coupling induced melting of a two-dimensional plasma crystal is explored. It is found that the formation of the hybrid mode causes the particle vibrations to partially synchronize at the hybrid frequency. Phase- and frequency-locked hybrid particle motion in both vertical and horizontal directions (hybrid mode) is observed. The system self-organizes in a rhythmic pattern of alternating in-phase and antiphase oscillating chains of particles. The spatial orientation of the synchronization pattern correlates well with the directions of the maximal increment of the shear-free hybrid mode.
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