Anisotropic confinement effects in a two-dimensional plasma crystal.

  title={Anisotropic confinement effects in a two-dimensional plasma crystal.},
  author={I. L. Laut and Sergey K. Zhdanov and Christoph R{\"a}th and Hubertus M. Thomas and Gregor Eugen Morfill},
  journal={Physical review. E},
  volume={93 1},
The spectral asymmetry of the wave-energy distribution of dust particles during mode-coupling-induced melting, observed for the first time in plasma crystals by Couëdel et al. [Phys. Rev. E 89, 053108 (2014)PLEEE81539-375510.1103/PhysRevE.89.053108], is studied theoretically and by molecular-dynamics simulations. It is shown that an anisotropy of the well confining the microparticles selects the directions of preferred particle motion. The observed differences in intensity of waves of opposed… 

Wave spectra of square-lattice domains in a quasi-two-dimensional binary complex plasma

Domains of the square lattice have been observed in a quasi-two-dimensional binary complex plasma. The longitudinal and transverse modes of the wave spectra were measured. To compare with the

Mode-coupling instability in a single-layer complex plasma crystal: Strong damping regime

Mode-coupling instability (MCI) in a single-layer complex plasma crystal was studied experimentally in the regime of strong neutral gas damping. To trigger MCI, the discharge power was reduced at

Influence of ion flow on structure of monolayer crystal

The structure of the dusty crystal is studied by Langevin molecular dynamics simulation when the influence of ion flow is taken into account. The “Yukawa/point-wake” model is used to describe the

Nonreciprocity and nonlinearity: Applications in complex plasmas and time series

Newton's third law of action and reaction is one pillar of classical mechanics. In nonequilibrium systems this fundamental law can be broken when the effective interaction is mediated by a third

Synchronization of particle motion in compressed two-dimensional plasma crystals

The collective motion of dust particles during the mode-coupling–induced melting of a two-dimensional plasma crystal is explored in molecular-dynamics simulations. The crystal is compressed



Wave mode coupling due to plasma wakes in two-dimensional plasma crystals: in-depth view

Experiments with two-dimensional (2D) plasma crystals are usually carried out in rf plasma sheaths, where the interparticle interactions are modified due to the presence of plasma wakes. The

Effect of strong wakes on waves in two-dimensional plasma crystals.

The wake-induced coupling between the modes causes the branches to "attract" each other, and their polarizations become elliptical, and the hybrid mode is significantly shifted towards smaller wave numbers, away from the border of the first Brillouin zone.

Transverse waves in a two-dimensional screened-coulomb crystal (Dusty plasma)

Transverse shear waves were observed experimentally in a two-dimensional screened Coulomb crystal. They were excited by applying a chopped laser beam to a 2D dusty plasma, i.e., a monolayer of

Wave modes in shear-deformed two-dimensional plasma crystals.

It is shown that the coupling of the in-plane compressional and the out-of-plane modes, leading to the formation of an unstable hybrid mode and generation of the hot spots, is enhanced in a certain direction determined by deformation.

Direct observation of mode-coupling instability in two-dimensional plasma crystals.

It is unambiguously demonstrated that the melting occurs due to the resonance coupling between two of the dust-lattice modes, and the variation of the wave modes with the experimental conditions, reveals exceptionally good agreement with the theory of mode-coupling instability.

Anisotropic dust lattice modes.

  • A. IvlevG. Morfill
  • Physics
    Physical review. E, Statistical, nonlinear, and soft matter physics
  • 2001
Dust lattice (DL) wave modes in a one-dimensional plasma crystal suspended in the plasma sheath are studied and it is shown that the "horizontal transverse mode" remains independent, but the "vertical transverse modes" and the longitudinal mode are coupled due to the particle-wake interaction.

Structure of finite two-dimensional Yukawa lattices: dust crystals.

The effect of the correlation energy between dust particles is shown to play an important role in the formation of the one-body distribution in these systems.

Heat transport in a two-dimensional complex (dusty) plasma at melting conditions.

The heat transport in a two-dimensional complex (dusty) plasma undergoing a phase transition was studied experimentally and found a thermal conductivity, which did not depend on temperature.

Melting transition in a two-dimensional complex plasma heated by driven acoustic instability

The melting transition in a two-dimensional complex (dusty) plasma is studied experimentally. A system consisting of ≈3900 microspheres is heated by amplitude modulating the rf discharge power with a

Partially coherent phonon heat conduction in superlattices

In this paper, the phonon thermal conductivity of semiconductor superlattices is calculated with the use of a modified lattice dynamics model, in which an imaginary wave vector is added. The mean