Das, Chinmay ; Krishnamurthy, H. R. (1998) Laser-induced quasicrystalline order in charge-stabilized colloidal systems Physical Review B, 58 (10). R5889-R5892. ISSN 0163-1829
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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.58.R5889
Related URL: http://dx.doi.org/10.1103/PhysRevB.58.R5889
Abstract
We have studied the ordering of a two-dimensional charge-stabilized colloidal system in the presence of a stationary one-dimensionally modulated laser field formed by the superposition of two modulations with wave vectors q0t and q0/t, where q0 is the wave vector corresponding to the first peak of the direct correlation function of the unperturbed liquid, and t is the golden mean. In the framework of the Landau-Alexander-McTague theory we find that a decagonal quasicrystalline phase is stabler than the liquid or the triangular lattice in certain regions of the phase diagram. Our study also shows a reentrant melting phenomenon for larger laser field strengths. We find that the transition from the modulated liquid to the quasicrystalline phase is continuous in contrast to a first order transition from the modulated liquid to the triangular crystalline phase.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 17617 |
Deposited On: | 16 Nov 2010 12:58 |
Last Modified: | 04 Jun 2011 09:52 |
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