Ionic mixtures in two dimensions: from crystals to chain and dipole gases
Soft Condensed Matter
2009-10-13 v1
Abstract
The ground state of a two-dimensional ionic mixture composed of oppositely charged spheres is determined as a function of the size asymmetry by using a penalty method. The cascade of stable structures includes square, triangular and rhombic crystals as well as a dipolar pair gas and a gas of one-dimensional crystalline chains. Thereby we confirm the square structure, found experimentally on charged granulates, and predict new phases detectable in experiments on granular and colloidal matter.
Keywords
Cite
@article{arxiv.0910.2103,
title = {Ionic mixtures in two dimensions: from crystals to chain and dipole gases},
author = {Lahcen Assoud and René Messina and Hartmut Löwen},
journal= {arXiv preprint arXiv:0910.2103},
year = {2009}
}