Issue |
Europhys. Lett.
Volume 72, Number 3, November 2005
|
|
---|---|---|
Page(s) | 396 - 402 | |
Section | Physics of gases, plasmas and electric discharges | |
DOI | https://doi.org/10.1209/epl/i2004-10551-4 | |
Published online | 30 September 2005 |
Structure and phase diagram of strongly-coupled bipolar charged-particle bilayers
1
Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences - P.O. Box 49, H-1525 Budapest, Hungary
2
Department of Physics, Boston College - Chestnut Hill, MA 02467, USA
Received:
5
October
2004
Accepted:
8
September
2005
We report Monte Carlo simulations of a classical, strongly-coupled charged-particle bilayer with opposite charges in the two layers. At layer separations comparable to the Wigner-Seitz radius the two layers support each other to establish a quasi-long-range order; at low layer separations stable dipoles (classical equivalents of bound excitons) are formed and the long-range order is extinguished as the Coulomb interaction changes to a dipole-dipole interaction. We identify dipole-liquid, dipole-solid, Coulomb-liquid and Coulomb-solid phases, which are exhibited in an intuitive phase diagram of the system in the Γ (coupling)-d (layer separation) plane.
PACS: 52.27.Gr – Strongly-coupled plasmas / 68.65.Ac – Multilayers / 05.20.-y – Classical statistical mechanics
© EDP Sciences, 2005
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