A two-component mixture of charged particles confined in a channel: melting

Abstract

The melting of a binary system of charged particles confined in a quasi-one-dimensional parabolic channel is studied through Monte Carlo simulations. At zero temperature the particles are ordered in parallel chains. The melting is anisotropic and different melting temperatures are obtained according to the spatial direction, and the different kinds of particles present in the system. Melting is very different for the single-, two- and four-chain configurations. A temperature induced structural phase transition is found between two different four-chain ordered states which is absent in the mono-disperse system. In the mixed regime, where the two kinds of particles are only slightly different, melting is almost isotropic and a thermally induced homogeneous distribution of the distinct kinds of charges is observed.

Yukawa particles confined in a channel and subject to a periodic potential: Ground state and normal modes

“…The most well studied phases are the one-and two-chain configurations where the transition between those two phases occurs through a zig-zag transition. The latter is a continuous transition as found theoretically for mono- [27] and bi-disperse [28,29] systems, and experimentally [22,23] with a power law dependence on the width [27,30]. Here we are interested to investigate how the phase diagram will be modified when an additional 1D periodic potential is present.…”

Helicity in cylindrically confined Yukawa systems

“…The results could be compared to confined colloidal bilayers under shear [37]. Moreover, more complicated confining potentials like a combination of a parabolic potential [38] and a cylindrical hard void can be studied in the future.…”

Tunable diffusion of magnetic particles in a quasi-one-dimensional channel

“…The system is called quasi-one-dimensional (q1D). Such a q1D system of repulsive interacting particles self-organize in a chainlike structure that was recently studied experimentally [25][26][27][28], and through analytical and numerical calculations [29][30][31][32][33].…”