# Are Steadily Moving Crystals Unstable

@article{Lahiri1996AreSM, title={Are Steadily Moving Crystals Unstable}, author={Rangan Lahiri and Sriram Ramaswamy}, journal={Physical Review Letters}, year={1996}, volume={79}, pages={1150-1153} }

We study the dynamics of small fluctuations about the uniform state of a crystal moving through a dissipative medium, e.g., a sedimenting colloidal crystal or a moving flux lattice, using a set of continuum equations for the displacement fields, and a one-dimensional driven lattice- gas model for the coupled concentration and tilt fields. For the colloidal crystal we predict a continuous nonequilibrium phase transition to a clumped state above a critical Peclet number.

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