Electrostatic Attraction of Coupled Wigner Crystals: Finite Temperature Effects

Details Electrostatic Attraction of Coupled Wigner Crystals: Finite Temperature Effects Electrostatic Attraction of Coupled Wigner Crystals: Finite Temperature Effects

2000-06-16

arxiv.org/abs/cond-mat/0006264v1

Physics

Condensed Matter

Soft Condensed Matter

23 pages, 5 figures, submitted to PRE

Scientific paper

10.1103/PhysRevE.63.051604

In this paper, we present a unified physical picture for the electrostatic attraction between two coupled planar Wigner crystals at finite (but below their melting) temperature. At very low temperatures, we find a new regime where the attraction, arising from the long-wavelength excitation of the plasmon mode, scales with the interplanar distance $d$ as $d^{-2}$. At higher temperatures, our calculation agrees with known results. Furthermore, we analyze the temperature dependence of the short-ranged attraction arising from ``structural'' correlations and argue that thermal fluctuations drastically reduce the strength of this attraction.

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