Spiral Evolution in a Confined Geometry

Details Spiral Evolution in a Confined Geometry Spiral Evolution in a Confined Geometry

2005-11-21

arxiv.org/abs/cond-mat/0511521v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures, to be published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.95.225505

Supported nanoscale lead crystallites with a step emerging from a non-centered screw dislocation on the circular top facet were prepared by rapid cooling from just above the melting temperature. STM observations of the top facet show a nonuniform rotation rate and shape of the spiral step as the crystallite relaxes. These features can be accurately modeled using curvature driven dynamics, as in classical models of spiral growth, with boundary conditions fixing the dislocation core and regions of the step lying along the outer facet edge.

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