Structure and phase diagram of strongly-coupled bipolar charged-particle bilayers

P. Hartmann, Z. Donkó, G. J. Kalman

Research output: Contribution to journalArticle

23 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)396-402
Number of pages7
JournalEurophysics Letters
Issue number3
Publication statusPublished - Nov 1 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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