Frustration and Melting of Colloidal Molecular Crystals

Details Frustration and Melting of Colloidal Molecular Crystals Frustration and Melting of Colloidal Molecular Crystals

2002-10-14

arxiv.org/abs/cond-mat/0210311v1

J. Phys. A: Math. Gen. 36, 5841 (2003)

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 3 postscript figures. Procedings of International Conference on Strongly Coupled Coulomb Systems, Santa Fe, 2002

Scientific paper

10.1088/0305-4470/36/22/303

Using numerical simulations we show that a variety of novel colloidal crystalline states and multi-step melting phenomena occur on square and triangular two-dimensional periodic substrates. At half-integer fillings different kinds of frustration effects can be realized. A two-step melting transition can occur in which individual colloidal molecules initially rotate, destroying the overall orientational order, followed by the onset of interwell colloidal hopping, in good agreement with recent experiments.

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