Phys. Rev. Lett. 93, 155002 (2004) [4 pages]

Wave Dispersion Relation of Two-Dimensional Plasma Crystals in a Magnetic Field

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G. Uchida *, U. Konopka, and G. Morfill
Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für extraterrestrische Physik, D-85740 Garching, Germany

Received 2 February 2004; published 7 October 2004

The wave dispersion relation in a two-dimensional strongly coupled plasma crystal is studied by theoretical analysis and molecular dynamics simulation taking into account a constant magnetic field parallel to the crystal normal. The expression for the wave dispersion relation clearly shows that high-frequency and low-frequency branches exist as a result of the coupling of longitudinal and transverse modes due to the Lorenz force acting on the dust particles. The high-frequency and the low-frequency branches are found to belong to right-hand and left-hand polarized waves, respectively.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.93.155002
DOI: 10.1103/PhysRevLett.93.155002
PACS: 52.27.Lw

* Electronic address: uchida@mpe.mpg.de

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