Are Steadily Moving Crystals Unstable?

Details Are Steadily Moving Crystals Unstable? Are Steadily Moving Crystals Unstable?

1996-10-02

arxiv.org/abs/cond-mat/9610022v2

Physics

Condensed Matter

4 pages, revtex, 2 .eps figures, uses epsf.sty; To be published in Phys. Rev. Lett. This version is substantially rewritten bu

Scientific paper

10.1103/PhysRevLett.79.1150

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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